CVE-2026-99245
KEYS: Fix key_reject_and_link() race with keyring restriction
In the Linux kernel, the following vulnerability has been resolved: KEYS: Fix key_reject_and_link() race with keyring restriction The restrict_link check in key_reject_and_link() is done before taking the keyring semaphore, racing with a concurrent keyring_restrict() that installs the restriction while holding the semaphore in write mode. Move the check to after __key_link_lock(), so it is done under the semaphore, matching the pattern used in __key_create_or_update().
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 |
≥ 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c; < c7956ec99ad0e173720d95de9fa788bb077809f2 (affected, git) ≥ 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c; < 2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f (affected, git) ≥ 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c; < 72f367417a6aee56821d0b0114cfd2b080008b63 (affected, git) ≥ 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c; < 19dfc37c9deefa69dc805d01d35d1f2fd7902e33 (affected, git) ≥ 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c; < 5787887eba0f0979a8c86d03a8e891395d5c24ad (affected, git) ≥ 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c; < 01835d3a3709be508ae5209f806640336c48e395 (affected, git) ≥ 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c; < 6fc0c818b1cac66003e937c8a0d3bfb23fd3f130 (affected, git) ≥ 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c; < 23a9163cc40b4996ba1e20533b1210a1a0bee416 (affected, git) Other versions: unaffected |
CNA: Linux |
| Linux Linux |
4.7 (affected) ≥ 0; < 4.7 (unaffected, semver) ≥ 5.10.273; ≤ 5.10.* (unaffected, semver) ≥ 5.15.224; ≤ 5.15.* (unaffected, semver) ≥ 6.1.191; ≤ 6.1.* (unaffected, semver) ≥ 6.6.161; ≤ 6.6.* (unaffected, semver) ≥ 6.12.115; ≤ 6.12.* (unaffected, semver) ≥ 6.18.60; ≤ 6.18.* (unaffected, semver) ≥ 7.2.14; ≤ 7.2.* (unaffected, semver) ≥ 7.3.1; ≤ 7.3.* (unaffected, semver) 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/c7956ec99ad0e173720d95de9fa788bb077809f2CNA: Linux
- https://git.kernel.org/stable/c/2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1fCNA: Linux
- https://git.kernel.org/stable/c/72f367417a6aee56821d0b0114cfd2b080008b63CNA: Linux
- https://git.kernel.org/stable/c/19dfc37c9deefa69dc805d01d35d1f2fd7902e33CNA: Linux
- https://git.kernel.org/stable/c/5787887eba0f0979a8c86d03a8e891395d5c24adCNA: Linux
- https://git.kernel.org/stable/c/01835d3a3709be508ae5209f806640336c48e395CNA: Linux
- https://git.kernel.org/stable/c/6fc0c818b1cac66003e937c8a0d3bfb23fd3f130CNA: Linux
- https://git.kernel.org/stable/c/23a9163cc40b4996ba1e20533b1210a1a0bee416CNA: Linux
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