CVE-2026-31554

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-31554

Key Details

CVE	CVE-2026-31554
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel
Classified as	CWE-416 (Use After Free)

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-31554
CVE	https://www.cve.org/CVERecord?id=CVE-2026-31554

Source

Reference

NVD

CVE