CVE-2023-0494

moderate-risk
Published 2023-03-27

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.

Do I need to act?

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0.61% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (20)

Affected Vendors

Redhat X.Org Fedoraproject

References (8)

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2165995
Patch https://gitlab.freedesktop.org/xorg/xserver/-/commit/0ba6d8c37071131a49790243cda...
Mailing List https://lists.x.org/archives/xorg-announce/2023-February/003320.html
https://security.gentoo.org/glsa/202305-30
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2165995
Patch https://gitlab.freedesktop.org/xorg/xserver/-/commit/0ba6d8c37071131a49790243cda...
Mailing List https://lists.x.org/archives/xorg-announce/2023-February/003320.html
https://security.gentoo.org/glsa/202305-30
49
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 2/34 · Minimal
Exposure 23/34 · High