CVE-2026-31554

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-31554
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31554.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-31554
Downstream
Related
Published
2026-04-24T14:35:38.527Z
Modified
2026-06-02T18:29:16.130330325Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
futex: Require sys_futex_requeue() to have identical flags
Details

In the Linux kernel, the following vulnerability has been resolved:

futex: Require sysfutexrequeue() to have identical flags

Nicholas reported that his LLM found it was possible to create a UaF when sysfutexrequeue() 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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31554.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0f4b5f972216782a4acb1ae00dcb55173847c2ff
Fixed
027145ace09fad4c7cbcd6c61fe9b429c63eb0e5
Fixed
18b7d09c2b794c71d4252f3ea2cf84ad12b73d6a
Fixed
e2f78c7ec1655fedd945366151ba54fcb9580508
Fixed
19f94b39058681dec64a10ebeb6f23fe7fc3f77a

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31554.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.80
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.21
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.11

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31554.json"