CVE-2026-72219

Description

In the Linux kernel, the following vulnerability has been resolved: lockd: Plug nlm_file leak when nlm_do_fopen() fails A client can repeatedly drive nlm_do_fopen() failures by presenting file handles that the underlying export rejects. After kzalloc_obj() succeeds in nlm_lookup_file(), the freshly allocated nlm_file is not yet inserted into nlm_files[]. The nlm_do_fopen() failure path jumps to out_unlock, which releases nlm_file_mutex and returns without freeing the allocation, so each failure leaks one nlm_file. Route the failure through out_free so kfree() runs before the function returns.

References

• https://git.kernel.org/stable/c/1161c4b5bd0048c8148e919f818a33cff3623ef0
• https://git.kernel.org/stable/c/1403f1221a35a6caf959bb7bf005741f17263c66
• https://git.kernel.org/stable/c/39f59bf67231ed2eb0cdf6337194360e964b609a
• https://git.kernel.org/stable/c/3f2dc01b9cb516d4727a3b9263ee58c71ca00ba9
• https://git.kernel.org/stable/c/bca74fff138429f3d5802865f38fc883d53a4f1a