CVE-2026-31554futex: Require sys_futex_requeue() to have identical flags
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: futex: Require sys_futex_requeue() to have identical flags Nicholas reported that his LLM found it was possible to create a UaF when sys_futex_requeue() is used with different flags. The initial motivation for allowing different flags was the variable sized futex, but since that hasn't been merged (yet), simply mandate the flags are identical, as is the case for the old style sys_futex() requeue operations.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 0f4b5f972216782a4acb1ae00dcb55173847c2ff before 027145ace09fad4c7cbcd6c61fe9b429c63eb0e5; from 0f4b5f972216782a4acb1ae00dcb55173847c2ff before 18b7d09c2b794c71d4252f3ea2cf84ad12b73d6a; from 0f4b5f972216782a4acb1ae00dcb55173847c2ff before e2f78c7ec1655fedd945366151ba54fcb9580508; from 0f4b5f972216782a4acb1ae00dcb55173847c2ff before 19f94b39058681dec64a10ebeb6f23fe7fc3f77a | CNA record |
linux linux_kernel linux:linux_kernel | from 6.7.1 before 6.12.80; from 6.13 before 6.18.21; from 6.19 before 6.19.11; 6.7; 7.0; 7.0; 7.0; 7.0; and 3 more ranges | NVD |
References
- https://git.kernel.org/stable/c/027145ace09fad4c7cbcd6c61fe9b429c63eb0e5patch
- https://git.kernel.org/stable/c/18b7d09c2b794c71d4252f3ea2cf84ad12b73d6apatch
- https://git.kernel.org/stable/c/e2f78c7ec1655fedd945366151ba54fcb9580508patch
- https://git.kernel.org/stable/c/19f94b39058681dec64a10ebeb6f23fe7fc3f77apatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.