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Fix potential NULL pointer dereference in ZSTD_customCalloc when custom allocator fails

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NiDU-NINJA 2026-03-07 08:27:15 +00:00
parent d7ee3207cc
commit 3f8f9b3f89
1 changed files with 6 additions and 2 deletions
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8
lib/common/allocations.h
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@ -33,9 +33,13 @@ MEM_STATIC void* ZSTD_customMalloc(size_t size, ZSTD_customMem customMem)
MEM_STATIC void* ZSTD_customCalloc(size_t size, ZSTD_customMem customMem)
{
if (customMem.customAlloc) {
/* calloc implemented as malloc+memset;
* not as efficient as calloc, but next best guess for custom malloc */
/* calloc implemented as malloc+memset */
void* const ptr = customMem.customAlloc(customMem.opaque, size);
if (ptr == NULL) {
return NULL;
}
ZSTD_memset(ptr, 0, size);
return ptr;
}