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Merge pull request #4613 from nidu-ninja/null-deref-custom-calloc

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Fix potential NULL pointer dereference in ZSTD_customCalloc when cust…
This commit is contained in:
Yann Collet
2026-03-16 09:37:07 -07:00
committed by GitHub
parent c84c8fb47f 3f8f9b3f89
commit e56865641e
1 changed files with 6 additions and 2 deletions
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lib/common/allocations.h
+6 -2
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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) MEM_STATIC void* ZSTD_customCalloc(size_t size, ZSTD_customMem customMem)
{ {
if (customMem.customAlloc) { if (customMem.customAlloc) {
/* calloc implemented as malloc+memset; /* calloc implemented as malloc+memset */
* not as efficient as calloc, but next best guess for custom malloc */
void* const ptr = customMem.customAlloc(customMem.opaque, size); void* const ptr = customMem.customAlloc(customMem.opaque, size);
if (ptr == NULL) {
return NULL;
}
ZSTD_memset(ptr, 0, size); ZSTD_memset(ptr, 0, size);
return ptr; return ptr;
} }