util/mem: fix NULL dereference in nvme_realloc() on allocation failure#3178
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igaw merged 1 commit intolinux-nvme:masterfrom Mar 13, 2026
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If nvme_alloc() fails and returns NULL, the subsequent memcpy() would dereference a NULL pointer, resulting in undefined behavior. Add a NULL check on the result of nvme_alloc() and return NULL early, consistent with standard realloc() semantics where the original pointer remains valid on failure. Signed-off-by: Jim Munn <[email protected]>
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If nvme_alloc() fails and returns NULL, the subsequent memcpy() would dereference a NULL pointer, resulting in undefined behavior. Add a NULL check on the result of nvme_alloc() and return NULL early, consistent with standard realloc() semantics where the original pointer remains valid on failure.