Potential double free and use after free (alerts 13,14)#3751
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rhc54 merged 1 commit intoopenpmix:masterfrom Dec 25, 2025
Merged
Potential double free and use after free (alerts 13,14)#3751rhc54 merged 1 commit intoopenpmix:masterfrom
rhc54 merged 1 commit intoopenpmix:masterfrom
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Deallocating memory more than once can lead to a double-free vulnerability. This can be exploited to corrupt the allocator's internal data structures, which can lead to denial-of-service attacks by crashing the program, or security vulnerabilities, by allowing an attacker to overwrite arbitrary memory locations. This rule finds accesses through a pointer of a memory location that has already been freed (i.e. through a dangling pointer). Such memory blocks have already been released to the dynamic memory manager, and modifying them can lead to anything from a segfault to memory corruption that would cause subsequent calls to the dynamic memory manager to behave erratically, to a possible security vulnerability. Signed-off-by: Ralph Castain <rhc@pmix.org>
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Deallocating memory more than once can lead to a double-free vulnerability. This can be exploited to corrupt the allocator's internal data structures, which can lead to denial-of-service attacks by crashing the program, or security vulnerabilities, by allowing an attacker to overwrite arbitrary memory locations.
This rule finds accesses through a pointer of a memory location that has already been freed (i.e. through a dangling pointer). Such memory blocks have already been released to the dynamic memory manager, and modifying them can lead to anything from a segfault to memory corruption that would cause subsequent calls to the dynamic memory manager to behave erratically, to a possible security vulnerability.