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[huf] Fix null pointer addition

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`HUF_DecompressFastArgs_init()` was adding 0 to NULL. Fix it by exiting
early for empty outputs. This is no change in behavior, because the
function was already exiting 0 in this case, just slightly later.
This commit is contained in:
Nick Terrell
2023-11-20 12:04:30 -08:00
committed by Nick Terrell
parent 5ab78c0418
commit dd4de1dd7a
1 changed files with 5 additions and 0 deletions
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5
lib/decompress/huf_decompress.c
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@@ -203,6 +203,11 @@ static size_t HUF_DecompressFastArgs_init(HUF_DecompressFastArgs* args, void* ds
if (!MEM_isLittleEndian() || MEM_32bits())
return 0;
/* Avoid nullptr addition */
if (dstSize == 0)
return 0;
assert(dst != NULL);
/* strict minimum : jump table + 1 byte per stream */
if (srcSize < 10)
return ERROR(corruption_detected);