CVE-2026-31493

Last refreshed2026-10-23

Status: UPDATED | Advisory ID: CVE-2026-31493

Key Details

CVE	CVE-2026-31493
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-21
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:

RDMA/efa: Fix use of completion ctx after free

On admin queue completion handling, if the admin command completed with

error we print data from the completion context. The issue is that we

already freed the completion context in polling/interrupts handler which

means we print data from context in an unknown state (it might be

already used again).

Change the admin submission flow so alloc/dealloc of the context will be

symmetric and dealloc will be called after any potential use of the

context. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-31493
CVE	https://www.cve.org/CVERecord?id=CVE-2026-31493

Source

Reference

NVD

CVE