CVE-2026-99245

Unknown

Last modified

CVE-2026-99245 is a vulnerability of currently unknown severity. 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()..

Description

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().

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c, < c7956ec99ad0e173720d95de9fa788bb077809f2; >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c, < 2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f; >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c, < 72f367417a6aee56821d0b0114cfd2b080008b63; >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c, < 19dfc37c9deefa69dc805d01d35d1f2fd7902e33; >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c, < 5787887eba0f0979a8c86d03a8e891395d5c24ad; >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c, < 01835d3a3709be508ae5209f806640336c48e395; >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c, < 6fc0c818b1cac66003e937c8a0d3bfb23fd3f130; >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c, < 23a9163cc40b4996ba1e20533b1210a1a0bee416; >= 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c, < 0b157166e612b70f98a332b6c7be7eac6f8e9593
LinuxLinux4.7

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-99245?
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().
How severe is CVE-2026-99245?
Severity scoring for CVE-2026-99245 is pending analysis.
How do I fix CVE-2026-99245?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST