CVE-2023-0494

Description

A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.58%
Vendor Advisory gentoo.org Vendor Advisory x.org
Affected: n/a xorg-x11-server
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2165995 issue tracking third party advisory
https://lists.x.org/archives/xorg-announce/2023-February/003320.html mailing list vendor advisory
https://gitlab.freedesktop.org/xorg/xserver/-/commit/0ba6d8c37071131a49790243cdac55392ecf71ec patch
https://security.gentoo.org/glsa/202305-30 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-0494?
CVE-2023-0494 has been scored as a high severity vulnerability.
How to fix CVE-2023-0494?
To fix CVE-2023-0494, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-0494 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-0494 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-0494?
CVE-2023-0494 affects n/a xorg-x11-server.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.