Merge branch 'main' into criemen/rename-java

cpp/ql/lib/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.4.1
+
+No user-facing changes.
+
 ## 1.4.0
 
 ### New Features

cpp/ql/lib/change-notes/released/1.4.1.md

@@ -0,0 +1,3 @@
+## 1.4.1
+
+No user-facing changes.

cpp/ql/lib/codeql-pack.release.yml

@@ -1,2 +1,2 @@
 ---
-lastReleaseVersion: 1.4.0
+lastReleaseVersion: 1.4.1

cpp/ql/lib/qlpack.yml

@@ -1,5 +1,5 @@
 name: codeql/cpp-all
-version: 1.4.1-dev
+version: 1.4.2-dev
 groups: cpp
 dbscheme: semmlecode.cpp.dbscheme
 extractor: cpp

cpp/ql/src/CHANGELOG.md

@@ -1,3 +1,9 @@
+## 1.2.1
+
+### Minor Analysis Improvements
+
+* The `cpp/uncontrolled-allocation-size` ("Uncontrolled allocation size") query now considers arithmetic operations that might reduce the size of user input as a barrier. The query therefore produces fewer false positive results.
+
 ## 1.2.0
 
 ### Query Metadata Changes

cpp/ql/src/Security/CWE/CWE-190/Bounded.qll

@@ -1,6 +1,6 @@
 /**
- * This file provides the `bounded` predicate that is used in both `cpp/uncontrolled-arithmetic`
- * and `cpp/tainted-arithmetic`.
+ * This file provides the `bounded` predicate that is used in `cpp/uncontrolled-arithmetic`,
+ * `cpp/tainted-arithmetic` and `cpp/uncontrolled-allocation-size`.
  */
 
 private import cpp
@@ -8,20 +8,18 @@ private import semmle.code.cpp.rangeanalysis.SimpleRangeAnalysis
 private import semmle.code.cpp.rangeanalysis.RangeAnalysisUtils
 
 /**
- * An operand `e` of a bitwise and expression `andExpr` (i.e., `andExpr` is either an `BitwiseAndExpr`
- * or an `AssignAndExpr`) with operands `operand1` and `operand2` is the operand that is not `e` is upper
- * bounded by some number that is less than the maximum integer allowed by the result type of `andExpr`.
+ * An operand `operand` of a bitwise and expression `andExpr` (i.e., `andExpr` is either a
+ * `BitwiseAndExpr` or an `AssignAndExpr`) is upper bounded by some number that is less than the
+ * maximum integer allowed by the result type of `andExpr`.
  */
 pragma[inline]
-private predicate boundedBitwiseAnd(Expr e, Expr andExpr, Expr operand1, Expr operand2) {
-  operand1 != operand2 and
-  e = operand1 and
-  upperBound(operand2.getFullyConverted()) < exprMaxVal(andExpr.getFullyConverted())
+private predicate boundedBitwiseAnd(Expr operand, Expr andExpr) {
+  upperBound(operand.getFullyConverted()) < exprMaxVal(andExpr.getFullyConverted())
 }
 
 /**
- * Holds if `e` is an arithmetic expression that cannot overflow, or if `e` is an operand of an
- * operation that may greatly reduce the range of possible values.
+ * Holds if `e` is an arithmetic expression that cannot overflow, or if `e` is an operation that
+ * may greatly reduce the range of possible values.
  */
 predicate bounded(Expr e) {
   // There can be two separate reasons for `convertedExprMightOverflow` not holding:
@@ -35,25 +33,25 @@ predicate bounded(Expr e) {
   ) and
   not convertedExprMightOverflow(e)
   or
-  // Optimistically assume that a remainder expression always yields a much smaller value.
-  e = any(RemExpr rem).getLeftOperand()
+  // Optimistically assume that the following operations always yields a much smaller value.
+  e instanceof RemExpr
   or
-  e = any(AssignRemExpr rem).getLValue()
+  e instanceof DivExpr
+  or
+  e instanceof RShiftExpr
   or
   exists(BitwiseAndExpr andExpr |
-    boundedBitwiseAnd(e, andExpr, andExpr.getAnOperand(), andExpr.getAnOperand())
+    e = andExpr and boundedBitwiseAnd(andExpr.getAnOperand(), andExpr)
   )
   or
-  exists(AssignAndExpr andExpr |
-    boundedBitwiseAnd(e, andExpr, andExpr.getAnOperand(), andExpr.getAnOperand())
-  )
-  or
-  // Optimistically assume that a division always yields a much smaller value.
-  e = any(DivExpr div).getLeftOperand()
+  // For the assignment variant of the operations we place the barrier on the assigned lvalue.
+  e = any(AssignRemExpr rem).getLValue()
   or
   e = any(AssignDivExpr div).getLValue()
   or
-  e = any(RShiftExpr shift).getLeftOperand()
-  or
   e = any(AssignRShiftExpr div).getLValue()
+  or
+  exists(AssignAndExpr andExpr |
+    e = andExpr.getLValue() and boundedBitwiseAnd(andExpr.getRValue(), andExpr)
+  )
 }

cpp/ql/src/change-notes/released/1.2.1.md

@@ -1,4 +1,5 @@
----
-category: minorAnalysis
----
-* The `cpp/uncontrolled-allocation-size` ("Uncontrolled allocation size") query now considers arithmetic operations that might reduce the size of user input as a barrier. The query therefore produces fewer false positive results.
+## 1.2.1
+
+### Minor Analysis Improvements
+
+* The `cpp/uncontrolled-allocation-size` ("Uncontrolled allocation size") query now considers arithmetic operations that might reduce the size of user input as a barrier. The query therefore produces fewer false positive results.

cpp/ql/src/codeql-pack.release.yml

@@ -1,2 +1,2 @@
 ---
-lastReleaseVersion: 1.2.0
+lastReleaseVersion: 1.2.1

cpp/ql/src/qlpack.yml

@@ -1,5 +1,5 @@
 name: codeql/cpp-queries
-version: 1.2.1-dev
+version: 1.2.2-dev
 groups:
   - cpp
   - queries

cpp/ql/test/query-tests/Security/CWE/CWE-190/semmle/ArithmeticUncontrolled/ArithmeticUncontrolled.expected

@@ -32,6 +32,8 @@ edges
 | test.cpp:24:11:24:18 | call to get_rand | test.cpp:25:7:25:7 | r | provenance |  |
 | test.cpp:30:13:30:14 | get_rand2 output argument | test.cpp:31:7:31:7 | r | provenance |  |
 | test.cpp:36:13:36:13 | get_rand3 output argument | test.cpp:37:7:37:7 | r | provenance |  |
+| test.cpp:62:19:62:24 | call to rand | test.cpp:62:19:62:24 | call to rand | provenance |  |
+| test.cpp:62:19:62:24 | call to rand | test.cpp:65:9:65:9 | x | provenance |  |
 | test.cpp:86:10:86:13 | call to rand | test.cpp:86:10:86:13 | call to rand | provenance |  |
 | test.cpp:86:10:86:13 | call to rand | test.cpp:90:10:90:10 | x | provenance |  |
 | test.cpp:98:10:98:13 | call to rand | test.cpp:98:10:98:13 | call to rand | provenance |  |
@@ -105,6 +107,9 @@ nodes
 | test.cpp:31:7:31:7 | r | semmle.label | r |
 | test.cpp:36:13:36:13 | get_rand3 output argument | semmle.label | get_rand3 output argument |
 | test.cpp:37:7:37:7 | r | semmle.label | r |
+| test.cpp:62:19:62:24 | call to rand | semmle.label | call to rand |
+| test.cpp:62:19:62:24 | call to rand | semmle.label | call to rand |
+| test.cpp:65:9:65:9 | x | semmle.label | x |
 | test.cpp:86:10:86:13 | call to rand | semmle.label | call to rand |
 | test.cpp:86:10:86:13 | call to rand | semmle.label | call to rand |
 | test.cpp:90:10:90:10 | x | semmle.label | x |
@@ -156,6 +161,7 @@ subpaths
 | test.cpp:25:7:25:7 | r | test.cpp:8:9:8:12 | call to rand | test.cpp:25:7:25:7 | r | This arithmetic expression depends on an $@, potentially causing an overflow. | test.cpp:8:9:8:12 | call to rand | uncontrolled value |
 | test.cpp:31:7:31:7 | r | test.cpp:13:10:13:13 | call to rand | test.cpp:31:7:31:7 | r | This arithmetic expression depends on an $@, potentially causing an overflow. | test.cpp:13:10:13:13 | call to rand | uncontrolled value |
 | test.cpp:37:7:37:7 | r | test.cpp:18:9:18:12 | call to rand | test.cpp:37:7:37:7 | r | This arithmetic expression depends on an $@, potentially causing an overflow. | test.cpp:18:9:18:12 | call to rand | uncontrolled value |
+| test.cpp:65:9:65:9 | x | test.cpp:62:19:62:24 | call to rand | test.cpp:65:9:65:9 | x | This arithmetic expression depends on an $@, potentially causing an underflow. | test.cpp:62:19:62:22 | call to rand | uncontrolled value |
 | test.cpp:90:10:90:10 | x | test.cpp:86:10:86:13 | call to rand | test.cpp:90:10:90:10 | x | This arithmetic expression depends on an $@, potentially causing an overflow. | test.cpp:86:10:86:13 | call to rand | uncontrolled value |
 | test.cpp:102:10:102:10 | x | test.cpp:98:10:98:13 | call to rand | test.cpp:102:10:102:10 | x | This arithmetic expression depends on an $@, potentially causing an overflow. | test.cpp:98:10:98:13 | call to rand | uncontrolled value |
 | test.cpp:146:9:146:9 | y | test.cpp:137:10:137:13 | call to rand | test.cpp:146:9:146:9 | y | This arithmetic expression depends on an $@, potentially causing an overflow. | test.cpp:137:10:137:13 | call to rand | uncontrolled value |

cpp/ql/test/query-tests/Security/CWE/CWE-190/semmle/ArithmeticUncontrolled/test.cpp

@@ -62,7 +62,7 @@ unsigned int test_remainder_subtract_unsigned()
 	unsigned int x = rand();
 	unsigned int y = x % 100; // y <= x
 
-	return x - y; // GOOD (as y <= x)
+	return x - y; // GOOD (as y <= x) [FALSE POSITIVE]
 }
 
 typedef unsigned long size_t;

cpp/ql/test/query-tests/Security/CWE/CWE-190/semmle/TaintedAllocationSize/TaintedAllocationSize.expected

@@ -13,26 +13,30 @@ edges
 | test.cpp:133:19:133:32 | *call to getenv | test.cpp:133:14:133:17 | call to atoi | provenance | TaintFunction |
 | test.cpp:148:15:148:18 | call to atol | test.cpp:152:11:152:28 | ... * ... | provenance |  |
 | test.cpp:148:20:148:33 | *call to getenv | test.cpp:148:15:148:18 | call to atol | provenance | TaintFunction |
-| test.cpp:224:8:224:23 | *get_tainted_size | test.cpp:256:9:256:24 | call to get_tainted_size | provenance |  |
-| test.cpp:226:9:226:42 | ... * ... | test.cpp:224:8:224:23 | *get_tainted_size | provenance |  |
-| test.cpp:226:14:226:27 | *call to getenv | test.cpp:226:9:226:42 | ... * ... | provenance | TaintFunction |
-| test.cpp:245:21:245:21 | s | test.cpp:246:21:246:21 | s | provenance |  |
-| test.cpp:252:19:252:52 | ... * ... | test.cpp:254:9:254:18 | local_size | provenance |  |
-| test.cpp:252:19:252:52 | ... * ... | test.cpp:260:11:260:20 | local_size | provenance |  |
-| test.cpp:252:19:252:52 | ... * ... | test.cpp:262:10:262:19 | local_size | provenance |  |
-| test.cpp:252:24:252:37 | *call to getenv | test.cpp:252:19:252:52 | ... * ... | provenance | TaintFunction |
-| test.cpp:262:10:262:19 | local_size | test.cpp:245:21:245:21 | s | provenance |  |
-| test.cpp:265:20:265:27 | *out_size | test.cpp:304:17:304:20 | get_size output argument | provenance |  |
-| test.cpp:265:20:265:27 | *out_size | test.cpp:320:18:320:21 | get_size output argument | provenance |  |
-| test.cpp:266:2:266:32 | ... = ... | test.cpp:265:20:265:27 | *out_size | provenance |  |
-| test.cpp:266:18:266:31 | *call to getenv | test.cpp:266:2:266:32 | ... = ... | provenance | TaintFunction |
-| test.cpp:274:15:274:18 | call to atoi | test.cpp:278:11:278:29 | ... * ... | provenance |  |
-| test.cpp:274:20:274:33 | *call to getenv | test.cpp:274:15:274:18 | call to atoi | provenance | TaintFunction |
-| test.cpp:304:17:304:20 | get_size output argument | test.cpp:306:11:306:28 | ... * ... | provenance |  |
-| test.cpp:320:18:320:21 | get_size output argument | test.cpp:323:10:323:27 | ... * ... | provenance |  |
-| test.cpp:368:13:368:16 | call to atoi | test.cpp:370:35:370:38 | size | provenance |  |
-| test.cpp:368:13:368:16 | call to atoi | test.cpp:371:35:371:38 | size | provenance |  |
-| test.cpp:368:18:368:31 | *call to getenv | test.cpp:368:13:368:16 | call to atoi | provenance | TaintFunction |
+| test.cpp:190:14:190:17 | call to atoi | test.cpp:194:11:194:28 | ... * ... | provenance |  |
+| test.cpp:190:19:190:32 | *call to getenv | test.cpp:190:14:190:17 | call to atoi | provenance | TaintFunction |
+| test.cpp:205:14:205:17 | call to atoi | test.cpp:209:11:209:28 | ... * ... | provenance |  |
+| test.cpp:205:19:205:32 | *call to getenv | test.cpp:205:14:205:17 | call to atoi | provenance | TaintFunction |
+| test.cpp:239:8:239:23 | *get_tainted_size | test.cpp:271:9:271:24 | call to get_tainted_size | provenance |  |
+| test.cpp:241:9:241:42 | ... * ... | test.cpp:239:8:239:23 | *get_tainted_size | provenance |  |
+| test.cpp:241:14:241:27 | *call to getenv | test.cpp:241:9:241:42 | ... * ... | provenance | TaintFunction |
+| test.cpp:260:21:260:21 | s | test.cpp:261:21:261:21 | s | provenance |  |
+| test.cpp:267:19:267:52 | ... * ... | test.cpp:269:9:269:18 | local_size | provenance |  |
+| test.cpp:267:19:267:52 | ... * ... | test.cpp:275:11:275:20 | local_size | provenance |  |
+| test.cpp:267:19:267:52 | ... * ... | test.cpp:277:10:277:19 | local_size | provenance |  |
+| test.cpp:267:24:267:37 | *call to getenv | test.cpp:267:19:267:52 | ... * ... | provenance | TaintFunction |
+| test.cpp:277:10:277:19 | local_size | test.cpp:260:21:260:21 | s | provenance |  |
+| test.cpp:280:20:280:27 | *out_size | test.cpp:319:17:319:20 | get_size output argument | provenance |  |
+| test.cpp:280:20:280:27 | *out_size | test.cpp:335:18:335:21 | get_size output argument | provenance |  |
+| test.cpp:281:2:281:32 | ... = ... | test.cpp:280:20:280:27 | *out_size | provenance |  |
+| test.cpp:281:18:281:31 | *call to getenv | test.cpp:281:2:281:32 | ... = ... | provenance | TaintFunction |
+| test.cpp:289:15:289:18 | call to atoi | test.cpp:293:11:293:29 | ... * ... | provenance |  |
+| test.cpp:289:20:289:33 | *call to getenv | test.cpp:289:15:289:18 | call to atoi | provenance | TaintFunction |
+| test.cpp:319:17:319:20 | get_size output argument | test.cpp:321:11:321:28 | ... * ... | provenance |  |
+| test.cpp:335:18:335:21 | get_size output argument | test.cpp:338:10:338:27 | ... * ... | provenance |  |
+| test.cpp:383:13:383:16 | call to atoi | test.cpp:385:35:385:38 | size | provenance |  |
+| test.cpp:383:13:383:16 | call to atoi | test.cpp:386:35:386:38 | size | provenance |  |
+| test.cpp:383:18:383:31 | *call to getenv | test.cpp:383:13:383:16 | call to atoi | provenance | TaintFunction |
 nodes
 | test.cpp:39:27:39:30 | **argv | semmle.label | **argv |
 | test.cpp:40:16:40:19 | call to atoi | semmle.label | call to atoi |
@@ -52,31 +56,37 @@ nodes
 | test.cpp:148:15:148:18 | call to atol | semmle.label | call to atol |
 | test.cpp:148:20:148:33 | *call to getenv | semmle.label | *call to getenv |
 | test.cpp:152:11:152:28 | ... * ... | semmle.label | ... * ... |
-| test.cpp:224:8:224:23 | *get_tainted_size | semmle.label | *get_tainted_size |
-| test.cpp:226:9:226:42 | ... * ... | semmle.label | ... * ... |
-| test.cpp:226:14:226:27 | *call to getenv | semmle.label | *call to getenv |
-| test.cpp:245:21:245:21 | s | semmle.label | s |
-| test.cpp:246:21:246:21 | s | semmle.label | s |
-| test.cpp:252:19:252:52 | ... * ... | semmle.label | ... * ... |
-| test.cpp:252:24:252:37 | *call to getenv | semmle.label | *call to getenv |
-| test.cpp:254:9:254:18 | local_size | semmle.label | local_size |
-| test.cpp:256:9:256:24 | call to get_tainted_size | semmle.label | call to get_tainted_size |
-| test.cpp:260:11:260:20 | local_size | semmle.label | local_size |
-| test.cpp:262:10:262:19 | local_size | semmle.label | local_size |
-| test.cpp:265:20:265:27 | *out_size | semmle.label | *out_size |
-| test.cpp:266:2:266:32 | ... = ... | semmle.label | ... = ... |
-| test.cpp:266:18:266:31 | *call to getenv | semmle.label | *call to getenv |
-| test.cpp:274:15:274:18 | call to atoi | semmle.label | call to atoi |
-| test.cpp:274:20:274:33 | *call to getenv | semmle.label | *call to getenv |
-| test.cpp:278:11:278:29 | ... * ... | semmle.label | ... * ... |
-| test.cpp:304:17:304:20 | get_size output argument | semmle.label | get_size output argument |
-| test.cpp:306:11:306:28 | ... * ... | semmle.label | ... * ... |
-| test.cpp:320:18:320:21 | get_size output argument | semmle.label | get_size output argument |
-| test.cpp:323:10:323:27 | ... * ... | semmle.label | ... * ... |
-| test.cpp:368:13:368:16 | call to atoi | semmle.label | call to atoi |
-| test.cpp:368:18:368:31 | *call to getenv | semmle.label | *call to getenv |
-| test.cpp:370:35:370:38 | size | semmle.label | size |
-| test.cpp:371:35:371:38 | size | semmle.label | size |
+| test.cpp:190:14:190:17 | call to atoi | semmle.label | call to atoi |
+| test.cpp:190:19:190:32 | *call to getenv | semmle.label | *call to getenv |
+| test.cpp:194:11:194:28 | ... * ... | semmle.label | ... * ... |
+| test.cpp:205:14:205:17 | call to atoi | semmle.label | call to atoi |
+| test.cpp:205:19:205:32 | *call to getenv | semmle.label | *call to getenv |
+| test.cpp:209:11:209:28 | ... * ... | semmle.label | ... * ... |
+| test.cpp:239:8:239:23 | *get_tainted_size | semmle.label | *get_tainted_size |
+| test.cpp:241:9:241:42 | ... * ... | semmle.label | ... * ... |
+| test.cpp:241:14:241:27 | *call to getenv | semmle.label | *call to getenv |
+| test.cpp:260:21:260:21 | s | semmle.label | s |
+| test.cpp:261:21:261:21 | s | semmle.label | s |
+| test.cpp:267:19:267:52 | ... * ... | semmle.label | ... * ... |
+| test.cpp:267:24:267:37 | *call to getenv | semmle.label | *call to getenv |
+| test.cpp:269:9:269:18 | local_size | semmle.label | local_size |
+| test.cpp:271:9:271:24 | call to get_tainted_size | semmle.label | call to get_tainted_size |
+| test.cpp:275:11:275:20 | local_size | semmle.label | local_size |
+| test.cpp:277:10:277:19 | local_size | semmle.label | local_size |
+| test.cpp:280:20:280:27 | *out_size | semmle.label | *out_size |
+| test.cpp:281:2:281:32 | ... = ... | semmle.label | ... = ... |
+| test.cpp:281:18:281:31 | *call to getenv | semmle.label | *call to getenv |
+| test.cpp:289:15:289:18 | call to atoi | semmle.label | call to atoi |
+| test.cpp:289:20:289:33 | *call to getenv | semmle.label | *call to getenv |
+| test.cpp:293:11:293:29 | ... * ... | semmle.label | ... * ... |
+| test.cpp:319:17:319:20 | get_size output argument | semmle.label | get_size output argument |
+| test.cpp:321:11:321:28 | ... * ... | semmle.label | ... * ... |
+| test.cpp:335:18:335:21 | get_size output argument | semmle.label | get_size output argument |
+| test.cpp:338:10:338:27 | ... * ... | semmle.label | ... * ... |
+| test.cpp:383:13:383:16 | call to atoi | semmle.label | call to atoi |
+| test.cpp:383:18:383:31 | *call to getenv | semmle.label | *call to getenv |
+| test.cpp:385:35:385:38 | size | semmle.label | size |
+| test.cpp:386:35:386:38 | size | semmle.label | size |
 subpaths
 #select
 | test.cpp:43:31:43:36 | call to malloc | test.cpp:39:27:39:30 | **argv | test.cpp:43:38:43:44 | tainted | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:39:27:39:30 | **argv | user input (a command-line argument) |
@@ -88,12 +98,14 @@ subpaths
 | test.cpp:128:17:128:22 | call to malloc | test.cpp:124:18:124:31 | *call to getenv | test.cpp:128:24:128:41 | ... * ... | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:124:18:124:31 | *call to getenv | user input (an environment variable) |
 | test.cpp:135:3:135:8 | call to malloc | test.cpp:133:19:133:32 | *call to getenv | test.cpp:135:10:135:27 | ... * ... | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:133:19:133:32 | *call to getenv | user input (an environment variable) |
 | test.cpp:152:4:152:9 | call to malloc | test.cpp:148:20:148:33 | *call to getenv | test.cpp:152:11:152:28 | ... * ... | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:148:20:148:33 | *call to getenv | user input (an environment variable) |
-| test.cpp:246:14:246:19 | call to malloc | test.cpp:252:24:252:37 | *call to getenv | test.cpp:246:21:246:21 | s | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:252:24:252:37 | *call to getenv | user input (an environment variable) |
-| test.cpp:254:2:254:7 | call to malloc | test.cpp:252:24:252:37 | *call to getenv | test.cpp:254:9:254:18 | local_size | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:252:24:252:37 | *call to getenv | user input (an environment variable) |
-| test.cpp:256:2:256:7 | call to malloc | test.cpp:226:14:226:27 | *call to getenv | test.cpp:256:9:256:24 | call to get_tainted_size | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:226:14:226:27 | *call to getenv | user input (an environment variable) |
-| test.cpp:260:2:260:9 | call to my_alloc | test.cpp:252:24:252:37 | *call to getenv | test.cpp:260:11:260:20 | local_size | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:252:24:252:37 | *call to getenv | user input (an environment variable) |
-| test.cpp:278:4:278:9 | call to malloc | test.cpp:274:20:274:33 | *call to getenv | test.cpp:278:11:278:29 | ... * ... | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:274:20:274:33 | *call to getenv | user input (an environment variable) |
-| test.cpp:306:4:306:9 | call to malloc | test.cpp:266:18:266:31 | *call to getenv | test.cpp:306:11:306:28 | ... * ... | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:266:18:266:31 | *call to getenv | user input (an environment variable) |
-| test.cpp:323:3:323:8 | call to malloc | test.cpp:266:18:266:31 | *call to getenv | test.cpp:323:10:323:27 | ... * ... | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:266:18:266:31 | *call to getenv | user input (an environment variable) |
-| test.cpp:370:25:370:33 | call to MyMalloc1 | test.cpp:368:18:368:31 | *call to getenv | test.cpp:370:35:370:38 | size | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:368:18:368:31 | *call to getenv | user input (an environment variable) |
-| test.cpp:371:25:371:33 | call to MyMalloc2 | test.cpp:368:18:368:31 | *call to getenv | test.cpp:371:35:371:38 | size | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:368:18:368:31 | *call to getenv | user input (an environment variable) |
+| test.cpp:194:4:194:9 | call to malloc | test.cpp:190:19:190:32 | *call to getenv | test.cpp:194:11:194:28 | ... * ... | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:190:19:190:32 | *call to getenv | user input (an environment variable) |
+| test.cpp:209:4:209:9 | call to malloc | test.cpp:205:19:205:32 | *call to getenv | test.cpp:209:11:209:28 | ... * ... | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:205:19:205:32 | *call to getenv | user input (an environment variable) |
+| test.cpp:261:14:261:19 | call to malloc | test.cpp:267:24:267:37 | *call to getenv | test.cpp:261:21:261:21 | s | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:267:24:267:37 | *call to getenv | user input (an environment variable) |
+| test.cpp:269:2:269:7 | call to malloc | test.cpp:267:24:267:37 | *call to getenv | test.cpp:269:9:269:18 | local_size | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:267:24:267:37 | *call to getenv | user input (an environment variable) |
+| test.cpp:271:2:271:7 | call to malloc | test.cpp:241:14:241:27 | *call to getenv | test.cpp:271:9:271:24 | call to get_tainted_size | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:241:14:241:27 | *call to getenv | user input (an environment variable) |
+| test.cpp:275:2:275:9 | call to my_alloc | test.cpp:267:24:267:37 | *call to getenv | test.cpp:275:11:275:20 | local_size | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:267:24:267:37 | *call to getenv | user input (an environment variable) |
+| test.cpp:293:4:293:9 | call to malloc | test.cpp:289:20:289:33 | *call to getenv | test.cpp:293:11:293:29 | ... * ... | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:289:20:289:33 | *call to getenv | user input (an environment variable) |
+| test.cpp:321:4:321:9 | call to malloc | test.cpp:281:18:281:31 | *call to getenv | test.cpp:321:11:321:28 | ... * ... | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:281:18:281:31 | *call to getenv | user input (an environment variable) |
+| test.cpp:338:3:338:8 | call to malloc | test.cpp:281:18:281:31 | *call to getenv | test.cpp:338:10:338:27 | ... * ... | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:281:18:281:31 | *call to getenv | user input (an environment variable) |
+| test.cpp:385:25:385:33 | call to MyMalloc1 | test.cpp:383:18:383:31 | *call to getenv | test.cpp:385:35:385:38 | size | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:383:18:383:31 | *call to getenv | user input (an environment variable) |
+| test.cpp:386:25:386:33 | call to MyMalloc2 | test.cpp:383:18:383:31 | *call to getenv | test.cpp:386:35:386:38 | size | This allocation size is derived from $@ and could allocate arbitrary amounts of memory. | test.cpp:383:18:383:31 | *call to getenv | user input (an environment variable) |

cpp/ql/test/query-tests/Security/CWE/CWE-190/semmle/TaintedAllocationSize/test.cpp

@@ -191,7 +191,22 @@ void more_bounded_tests() {
 
 		if (size % 100)
 		{
-			malloc(size * sizeof(int)); // BAD [NOT DETECTED]
+			malloc(size * sizeof(int)); // BAD
+		}
+	}
+
+	{
+		int size = atoi(getenv("USER"));
+		int size2 = size & 7; // Pick the first three bits of size
+		malloc(size2 * sizeof(int)); // GOOD
+	}
+
+	{
+		int size = atoi(getenv("USER"));
+
+		if (size & 7)
+		{
+			malloc(size * sizeof(int)); // BAD
 		}
 	}
 

cpp/ql/test/query-tests/Security/CWE/CWE-457/semmle/tests/LoopConditionsConst.expected

@@ -2,25 +2,25 @@
 | test.cpp:43:2:45:2 | for(...;...;...) ... | test.cpp:43:18:43:26 | ... < ... |  | i | { ... } | i | ExprStmt |
 | test.cpp:74:2:77:2 | while (...) ... | test.cpp:74:9:74:17 | ... > ... | 1 | count | { ... } | count | ExprStmt |
 | test.cpp:84:2:88:2 | while (...) ... | test.cpp:84:9:84:17 | ... > ... |  | count | { ... } | count | if (...) ...  |
-| test.cpp:171:3:173:3 | while (...) ... | test.cpp:171:10:171:43 | ... != ... | 0 |  | { ... } | 0 | return ... |
-| test.cpp:251:2:255:2 | while (...) ... | test.cpp:251:9:251:12 | loop | 1 | loop | { ... } | loop | return ... |
-| test.cpp:263:2:267:2 | while (...) ... | test.cpp:263:9:263:20 | ... && ... | 1 | 1 | { ... } | ... && ... | return ... |
-| test.cpp:275:2:279:2 | while (...) ... | test.cpp:275:9:275:13 | ! ... | 1 | stop | { ... } | stop | return ... |
-| test.cpp:287:2:291:2 | while (...) ... | test.cpp:287:9:287:20 | ... && ... | 1 | loop | { ... } | loop | return ... |
-| test.cpp:299:2:303:2 | while (...) ... | test.cpp:299:9:299:20 | ... && ... | 1 | loop | { ... } | ... && ..., loop | return ... |
-| test.cpp:311:2:315:2 | while (...) ... | test.cpp:311:9:311:21 | ... \|\| ... | 1 | ... \|\| ... | { ... } | 0 | return ... |
-| test.cpp:323:2:328:2 | while (...) ... | test.cpp:323:9:323:17 | ... ? ... : ... |  | b, c | { ... } | c | return ... |
-| test.cpp:336:2:341:2 | while (...) ... | test.cpp:336:9:336:21 | ... \|\| ... | 1 | b, c | { ... } | c | return ... |
-| test.cpp:348:2:351:17 | do (...) ... | test.cpp:351:11:351:15 | 0 |  | { ... } | { ... } | { ... } | return ... |
-| test.cpp:361:2:364:2 | while (...) ... | test.cpp:361:9:361:21 | ... \|\| ... | 1 | ... \|\| ... | { ... } | 0 | while (...) ... |
-| test.cpp:365:2:368:2 | while (...) ... | test.cpp:365:9:365:13 | ! ... | 1 | stop | { ... } | stop | while (...) ... |
-| test.cpp:369:2:373:2 | while (...) ... | test.cpp:369:9:369:21 | ... \|\| ... | 1 | b, c | { ... } | c | do (...) ... |
-| test.cpp:374:2:376:17 | do (...) ... | test.cpp:376:11:376:15 | 0 |  | do (...) ... | { ... } | { ... } | return ... |
-| test.cpp:384:2:386:2 | while (...) ... | test.cpp:384:9:384:12 | 1 | 1 | 1 | { ... } |  | return ... |
-| test.cpp:394:2:396:2 | while (...) ... | test.cpp:394:9:394:21 | ... , ... |  | { ... } | { ... } |  |  |
-| test.cpp:404:3:408:3 | while (...) ... | test.cpp:404:10:404:13 | loop | 1 | loop | { ... } |  |  |
-| test.cpp:416:2:418:2 | for(...;...;...) ... | test.cpp:416:18:416:23 | ... < ... | 1 | i | { ... } | i | return ... |
-| test.cpp:424:2:425:2 | for(...;...;...) ... | test.cpp:424:18:424:23 | ... < ... | 1 | i | { ... } | i | return ... |
-| test.cpp:433:2:434:2 | for(...;...;...) ... | test.cpp:433:18:433:22 | 0 | 0 |  | { ... } | 0 | return ... |
-| test.cpp:559:3:564:3 | while (...) ... | test.cpp:559:9:559:15 | call to getBool |  | call to getBool | { ... } | call to getBool | ExprStmt |
-| test.cpp:574:3:579:3 | while (...) ... | test.cpp:574:10:574:16 | call to getBool |  | call to getBool | { ... } | call to getBool | ExprStmt |
+| test.cpp:172:3:174:3 | while (...) ... | test.cpp:172:10:172:43 | ... != ... |  | args | { ... } | args | return ... |
+| test.cpp:259:2:263:2 | while (...) ... | test.cpp:259:9:259:12 | loop | 1 | loop | { ... } | loop | return ... |
+| test.cpp:271:2:275:2 | while (...) ... | test.cpp:271:9:271:20 | ... && ... | 1 | 1 | { ... } | ... && ... | return ... |
+| test.cpp:283:2:287:2 | while (...) ... | test.cpp:283:9:283:13 | ! ... | 1 | stop | { ... } | stop | return ... |
+| test.cpp:295:2:299:2 | while (...) ... | test.cpp:295:9:295:20 | ... && ... | 1 | loop | { ... } | loop | return ... |
+| test.cpp:307:2:311:2 | while (...) ... | test.cpp:307:9:307:20 | ... && ... | 1 | loop | { ... } | ... && ..., loop | return ... |
+| test.cpp:319:2:323:2 | while (...) ... | test.cpp:319:9:319:21 | ... \|\| ... | 1 | ... \|\| ... | { ... } | 0 | return ... |
+| test.cpp:331:2:336:2 | while (...) ... | test.cpp:331:9:331:17 | ... ? ... : ... |  | b, c | { ... } | c | return ... |
+| test.cpp:344:2:349:2 | while (...) ... | test.cpp:344:9:344:21 | ... \|\| ... | 1 | b, c | { ... } | c | return ... |
+| test.cpp:356:2:359:17 | do (...) ... | test.cpp:359:11:359:15 | 0 |  | { ... } | { ... } | { ... } | return ... |
+| test.cpp:369:2:372:2 | while (...) ... | test.cpp:369:9:369:21 | ... \|\| ... | 1 | ... \|\| ... | { ... } | 0 | while (...) ... |
+| test.cpp:373:2:376:2 | while (...) ... | test.cpp:373:9:373:13 | ! ... | 1 | stop | { ... } | stop | while (...) ... |
+| test.cpp:377:2:381:2 | while (...) ... | test.cpp:377:9:377:21 | ... \|\| ... | 1 | b, c | { ... } | c | do (...) ... |
+| test.cpp:382:2:384:17 | do (...) ... | test.cpp:384:11:384:15 | 0 |  | do (...) ... | { ... } | { ... } | return ... |
+| test.cpp:392:2:394:2 | while (...) ... | test.cpp:392:9:392:12 | 1 | 1 | 1 | { ... } |  | return ... |
+| test.cpp:402:2:404:2 | while (...) ... | test.cpp:402:9:402:21 | ... , ... |  | { ... } | { ... } |  |  |
+| test.cpp:412:3:416:3 | while (...) ... | test.cpp:412:10:412:13 | loop | 1 | loop | { ... } |  |  |
+| test.cpp:424:2:426:2 | for(...;...;...) ... | test.cpp:424:18:424:23 | ... < ... | 1 | i | { ... } | i | return ... |
+| test.cpp:432:2:433:2 | for(...;...;...) ... | test.cpp:432:18:432:23 | ... < ... | 1 | i | { ... } | i | return ... |
+| test.cpp:441:2:442:2 | for(...;...;...) ... | test.cpp:441:18:441:22 | 0 | 0 |  | { ... } | 0 | return ... |
+| test.cpp:567:3:572:3 | while (...) ... | test.cpp:567:9:567:15 | call to getBool |  | call to getBool | { ... } | call to getBool | ExprStmt |
+| test.cpp:582:3:587:3 | while (...) ... | test.cpp:582:10:582:16 | call to getBool |  | call to getBool | { ... } | call to getBool | ExprStmt |

cpp/ql/test/query-tests/Security/CWE/CWE-457/semmle/tests/UninitializedLocal.expected

@@ -2,28 +2,28 @@ edges
 nodes
 | test.cpp:11:6:11:8 | definition of foo | semmle.label | definition of foo |
 | test.cpp:111:6:111:8 | definition of foo | semmle.label | definition of foo |
-| test.cpp:218:7:218:7 | definition of x | semmle.label | definition of x |
-| test.cpp:241:6:241:6 | definition of i | semmle.label | definition of i |
-| test.cpp:333:7:333:7 | definition of a | semmle.label | definition of a |
-| test.cpp:358:7:358:7 | definition of a | semmle.label | definition of a |
-| test.cpp:359:6:359:8 | definition of val | semmle.label | definition of val |
-| test.cpp:414:9:414:9 | definition of j | semmle.label | definition of j |
-| test.cpp:431:9:431:9 | definition of j | semmle.label | definition of j |
-| test.cpp:452:6:452:6 | definition of x | semmle.label | definition of x |
-| test.cpp:458:6:458:6 | definition of x | semmle.label | definition of x |
-| test.cpp:464:6:464:6 | definition of x | semmle.label | definition of x |
-| test.cpp:471:6:471:6 | definition of x | semmle.label | definition of x |
+| test.cpp:226:7:226:7 | definition of x | semmle.label | definition of x |
+| test.cpp:249:6:249:6 | definition of i | semmle.label | definition of i |
+| test.cpp:341:7:341:7 | definition of a | semmle.label | definition of a |
+| test.cpp:366:7:366:7 | definition of a | semmle.label | definition of a |
+| test.cpp:367:6:367:8 | definition of val | semmle.label | definition of val |
+| test.cpp:422:9:422:9 | definition of j | semmle.label | definition of j |
+| test.cpp:439:9:439:9 | definition of j | semmle.label | definition of j |
+| test.cpp:460:6:460:6 | definition of x | semmle.label | definition of x |
+| test.cpp:466:6:466:6 | definition of x | semmle.label | definition of x |
+| test.cpp:472:6:472:6 | definition of x | semmle.label | definition of x |
+| test.cpp:479:6:479:6 | definition of x | semmle.label | definition of x |
 #select
 | test.cpp:12:6:12:8 | foo | test.cpp:11:6:11:8 | definition of foo | test.cpp:11:6:11:8 | definition of foo | The variable $@ may not be initialized at this access. | test.cpp:11:6:11:8 | foo | foo |
 | test.cpp:113:6:113:8 | foo | test.cpp:111:6:111:8 | definition of foo | test.cpp:111:6:111:8 | definition of foo | The variable $@ may not be initialized at this access. | test.cpp:111:6:111:8 | foo | foo |
-| test.cpp:219:3:219:3 | x | test.cpp:218:7:218:7 | definition of x | test.cpp:218:7:218:7 | definition of x | The variable $@ may not be initialized at this access. | test.cpp:218:7:218:7 | x | x |
-| test.cpp:243:13:243:13 | i | test.cpp:241:6:241:6 | definition of i | test.cpp:241:6:241:6 | definition of i | The variable $@ may not be initialized at this access. | test.cpp:241:6:241:6 | i | i |
-| test.cpp:336:10:336:10 | a | test.cpp:333:7:333:7 | definition of a | test.cpp:333:7:333:7 | definition of a | The variable $@ may not be initialized at this access. | test.cpp:333:7:333:7 | a | a |
-| test.cpp:369:10:369:10 | a | test.cpp:358:7:358:7 | definition of a | test.cpp:358:7:358:7 | definition of a | The variable $@ may not be initialized at this access. | test.cpp:358:7:358:7 | a | a |
-| test.cpp:378:9:378:11 | val | test.cpp:359:6:359:8 | definition of val | test.cpp:359:6:359:8 | definition of val | The variable $@ may not be initialized at this access. | test.cpp:359:6:359:8 | val | val |
-| test.cpp:417:10:417:10 | j | test.cpp:414:9:414:9 | definition of j | test.cpp:414:9:414:9 | definition of j | The variable $@ may not be initialized at this access. | test.cpp:414:9:414:9 | j | j |
-| test.cpp:436:9:436:9 | j | test.cpp:431:9:431:9 | definition of j | test.cpp:431:9:431:9 | definition of j | The variable $@ may not be initialized at this access. | test.cpp:431:9:431:9 | j | j |
-| test.cpp:454:2:454:2 | x | test.cpp:452:6:452:6 | definition of x | test.cpp:452:6:452:6 | definition of x | The variable $@ may not be initialized at this access. | test.cpp:452:6:452:6 | x | x |
-| test.cpp:460:7:460:7 | x | test.cpp:458:6:458:6 | definition of x | test.cpp:458:6:458:6 | definition of x | The variable $@ may not be initialized at this access. | test.cpp:458:6:458:6 | x | x |
-| test.cpp:467:2:467:2 | x | test.cpp:464:6:464:6 | definition of x | test.cpp:464:6:464:6 | definition of x | The variable $@ may not be initialized at this access. | test.cpp:464:6:464:6 | x | x |
-| test.cpp:474:7:474:7 | x | test.cpp:471:6:471:6 | definition of x | test.cpp:471:6:471:6 | definition of x | The variable $@ may not be initialized at this access. | test.cpp:471:6:471:6 | x | x |
+| test.cpp:227:3:227:3 | x | test.cpp:226:7:226:7 | definition of x | test.cpp:226:7:226:7 | definition of x | The variable $@ may not be initialized at this access. | test.cpp:226:7:226:7 | x | x |
+| test.cpp:251:13:251:13 | i | test.cpp:249:6:249:6 | definition of i | test.cpp:249:6:249:6 | definition of i | The variable $@ may not be initialized at this access. | test.cpp:249:6:249:6 | i | i |
+| test.cpp:344:10:344:10 | a | test.cpp:341:7:341:7 | definition of a | test.cpp:341:7:341:7 | definition of a | The variable $@ may not be initialized at this access. | test.cpp:341:7:341:7 | a | a |
+| test.cpp:377:10:377:10 | a | test.cpp:366:7:366:7 | definition of a | test.cpp:366:7:366:7 | definition of a | The variable $@ may not be initialized at this access. | test.cpp:366:7:366:7 | a | a |
+| test.cpp:386:9:386:11 | val | test.cpp:367:6:367:8 | definition of val | test.cpp:367:6:367:8 | definition of val | The variable $@ may not be initialized at this access. | test.cpp:367:6:367:8 | val | val |
+| test.cpp:425:10:425:10 | j | test.cpp:422:9:422:9 | definition of j | test.cpp:422:9:422:9 | definition of j | The variable $@ may not be initialized at this access. | test.cpp:422:9:422:9 | j | j |
+| test.cpp:444:9:444:9 | j | test.cpp:439:9:439:9 | definition of j | test.cpp:439:9:439:9 | definition of j | The variable $@ may not be initialized at this access. | test.cpp:439:9:439:9 | j | j |
+| test.cpp:462:2:462:2 | x | test.cpp:460:6:460:6 | definition of x | test.cpp:460:6:460:6 | definition of x | The variable $@ may not be initialized at this access. | test.cpp:460:6:460:6 | x | x |
+| test.cpp:468:7:468:7 | x | test.cpp:466:6:466:6 | definition of x | test.cpp:466:6:466:6 | definition of x | The variable $@ may not be initialized at this access. | test.cpp:466:6:466:6 | x | x |
+| test.cpp:475:2:475:2 | x | test.cpp:472:6:472:6 | definition of x | test.cpp:472:6:472:6 | definition of x | The variable $@ may not be initialized at this access. | test.cpp:472:6:472:6 | x | x |
+| test.cpp:482:7:482:7 | x | test.cpp:479:6:479:6 | definition of x | test.cpp:479:6:479:6 | definition of x | The variable $@ may not be initialized at this access. | test.cpp:479:6:479:6 | x | x |

cpp/ql/test/query-tests/Security/CWE/CWE-457/semmle/tests/test.cpp

@@ -156,11 +156,12 @@ int absCorrect2(int i) {
 	return j; // correct: j always initialized before use
 }
 
+typedef __builtin_va_list va_list;
+#define va_start(v, l)	__builtin_va_start(v,l)
+#define va_end(v)	__builtin_va_end(v)
+#define va_arg(v, l)	__builtin_va_arg(v,l)
+#define va_copy(d, s)	__builtin_va_copy(d,s)
 
-typedef void *va_list;
-#define va_start(ap, parmN)
-#define va_end(ap)
-#define va_arg(ap, type) ((type)0)
 #define NULL 0
 
 // Variadic initialisation
@@ -176,7 +177,7 @@ void init(int val, ...) {
 void test15() {
   int foo;
   init(42, &foo, NULL);
-  use(foo); //GOOD -- initialised by `init`
+  use(foo); // GOOD -- initialised by `init`
 }
 
 // Variadic non-initialisation
@@ -192,6 +193,13 @@ void test16() {
   use(foo); // BAD (NOT REPORTED)
 }
 
+void test_va_copy(va_list va) {
+  va_list va2;
+  va_copy(va2, va); // GOOD -- this is an initialization
+  use(va2);
+  va_end(va2);
+}
+
 bool test17(bool b) {
   int foo;
   int *p = nullptr;

csharp/ql/campaigns/Solorigate/lib/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.7.23
+
+No user-facing changes.
+
 ## 1.7.22
 
 No user-facing changes.

csharp/ql/campaigns/Solorigate/lib/change-notes/released/1.7.23.md

@@ -0,0 +1,3 @@
+## 1.7.23
+
+No user-facing changes.

csharp/ql/campaigns/Solorigate/lib/codeql-pack.release.yml

@@ -1,2 +1,2 @@
 ---
-lastReleaseVersion: 1.7.22
+lastReleaseVersion: 1.7.23

csharp/ql/campaigns/Solorigate/lib/qlpack.yml

@@ -1,5 +1,5 @@
 name: codeql/csharp-solorigate-all
-version: 1.7.23-dev
+version: 1.7.24-dev
 groups:
   - csharp
   - solorigate

csharp/ql/campaigns/Solorigate/src/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.7.23
+
+No user-facing changes.
+
 ## 1.7.22
 
 No user-facing changes.

csharp/ql/campaigns/Solorigate/src/change-notes/released/1.7.23.md

@@ -0,0 +1,3 @@
+## 1.7.23
+
+No user-facing changes.

csharp/ql/campaigns/Solorigate/src/codeql-pack.release.yml

@@ -1,2 +1,2 @@
 ---
-lastReleaseVersion: 1.7.22
+lastReleaseVersion: 1.7.23

csharp/ql/campaigns/Solorigate/src/qlpack.yml

@@ -1,5 +1,5 @@
 name: codeql/csharp-solorigate-queries
-version: 1.7.23-dev
+version: 1.7.24-dev
 groups:
   - csharp
   - solorigate