CVE-2026-93516

CVE Details

Release Date:	2026-10-07
Impact:	Important	What is this?

Description

A flaw was found in xorg-x11-server. A local user can exploit a use-after-free condition--where the software attempts to access memory after it has been freed--by establishing a passive input grab and removing an input device. When subsequent input events are processed, the server dereferences the dangling device pointer. This flaw can lead to arbitrary code execution or a Denial of Service (DoS) via an X server crash. (From Red Hat.)

See more information about CVE-2026-93516 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	7.8
Vector String:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Version:	3.1
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 10 (xorg-x11-server-Xwayland)	ELSA-2026-85191	2026-10-19
Oracle Linux version 9 (xorg-x11-server)	ELSA-2026-84574	2026-10-19
Oracle Linux version 9 (xorg-x11-server-Xwayland)	ELSA-2026-85193	2026-10-19