CVE-2026-72219
lockd: Plug nlm_file leak when nlm_do_fopen() fails
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Linux Linux |
≥ e580323ac0b51ad10ec2e181d1f777479b7983e7; < bca74fff138429f3d5802865f38fc883d53a4f1a (affected, git) ≥ 7f024fcd5c97dc70bb9121c80407cf3cf9be7159; < d7c677feb3aa1f42b1026d75a8ea61338b51e4fb (affected, git) ≥ 7f024fcd5c97dc70bb9121c80407cf3cf9be7159; < 39f59bf67231ed2eb0cdf6337194360e964b609a (affected, git) ≥ 7f024fcd5c97dc70bb9121c80407cf3cf9be7159; < ddfbd816273b4e9c9b836f5b8773664c6f40f807 (affected, git) ≥ 7f024fcd5c97dc70bb9121c80407cf3cf9be7159; < 1403f1221a35a6caf959bb7bf005741f17263c66 (affected, git) ≥ 7f024fcd5c97dc70bb9121c80407cf3cf9be7159; < 1161c4b5bd0048c8148e919f818a33cff3623ef0 (affected, git) ≥ 7f024fcd5c97dc70bb9121c80407cf3cf9be7159; < 3f2dc01b9cb516d4727a3b9263ee58c71ca00ba9 (affected, git) ≥ 7f024fcd5c97dc70bb9121c80407cf3cf9be7159; < f16a1513452edb532fec81e591c64c320866719c (affected, git) ≥ 5.10.220; < 5.10.261 (affected, semver) Other versions: unaffected |
CNA: Linux |
| Linux Linux |
5.15 (affected) ≥ 0; < 5.15 (unaffected, semver) ≥ 5.10.261; ≤ 5.10.* (unaffected, semver) ≥ 5.15.212; ≤ 5.15.* (unaffected, semver) ≥ 6.1.178; ≤ 6.1.* (unaffected, semver) ≥ 6.6.145; ≤ 6.6.* (unaffected, semver) ≥ 6.12.97; ≤ 6.12.* (unaffected, semver) ≥ 6.18.40; ≤ 6.18.* (unaffected, semver) ≥ 7.1.5; ≤ 7.1.* (unaffected, semver) ≥ 7.2; ≤ * (unaffected, original_commit_for_fix) Other versions: affected |
CNA: Linux |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://git.kernel.org/stable/c/bca74fff138429f3d5802865f38fc883d53a4f1aCNA: Linux
- https://git.kernel.org/stable/c/d7c677feb3aa1f42b1026d75a8ea61338b51e4fbCNA: Linux
- https://git.kernel.org/stable/c/39f59bf67231ed2eb0cdf6337194360e964b609aCNA: Linux
- https://git.kernel.org/stable/c/ddfbd816273b4e9c9b836f5b8773664c6f40f807CNA: Linux
- https://git.kernel.org/stable/c/1403f1221a35a6caf959bb7bf005741f17263c66CNA: Linux
- https://git.kernel.org/stable/c/1161c4b5bd0048c8148e919f818a33cff3623ef0CNA: Linux
- https://git.kernel.org/stable/c/3f2dc01b9cb516d4727a3b9263ee58c71ca00ba9CNA: Linux
- https://git.kernel.org/stable/c/f16a1513452edb532fec81e591c64c320866719cCNA: Linux
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