libkmod: Add another section size check

Make sure that section is actually large enough to hold a 32 bit value. Signed-off-by: Tobias Stoeckmann <[email protected]>
kmod-project · Oct 15, 2024 · 896ebe8 · 896ebe8
1 parent 1104af1
commit 896ebe8
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/libkmod/libkmod-elf.c b/libkmod/libkmod-elf.c
@@ -770,7 +770,7 @@ static uint64_t kmod_elf_resolve_crc(const struct kmod_elf *elf, uint64_t crc,
 		return (uint64_t)-1;
 	}
 
-	if (crc > (size - sizeof(uint32_t))) {
+	if (size < sizeof(uint32_t) || crc > (size - sizeof(uint32_t))) {
 		ELFDBG(elf,
 		       "CRC offset %" PRIu64 " is too big, section %" PRIu16
 		       " size is %" PRIu64 "\n",