What’s Vulnerable › Vulnerabilities

CVE-2026-46328: apparmor: fix rlimit for posix cpu timers

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-09 · updated 2026-07-23

Description

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix rlimit for posix cpu timers Posix cpu timers requires an additional step beyond setting the rlimit. Refactor the code so its clear when what code is setting the limit and conditionally update the posix cpu timers when appropriate.

Affected products

• Linux kernel: from 4.10 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.14 — fixed in 5.10.252, 5.15.202, 6.1.165, 6.12.75, 6.18.14, 6.19.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.252, 5.15.202, 6.1.165, 6.12.75. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1f736dfe27c857b78f8461cd7c3dd9640be74b37
• https://git.kernel.org/stable/c/2232d7cd243833ad750cae656d1817fe43744a09
• https://git.kernel.org/stable/c/28aa93fcfb33b6d580c5df4ae8b6d13fb0e6fcd3
• https://git.kernel.org/stable/c/57d51d41b90eface809b72e0e009b50546492f1f
• https://git.kernel.org/stable/c/6ca56813f4a589f536adceb42882855d91fb1125
• https://git.kernel.org/stable/c/9bf1fa150775b0c6b794e4b6a2c0395e13777999
• https://git.kernel.org/stable/c/e1cc11550b2f66687a374536c9dfdddcefca0efe
• https://git.kernel.org/stable/c/e43818b16815c0c2bf933ef28316f8e704e5e0ef

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