Cyber Resilience

CVE-2023-0494

High

Published: 27 March 2023

Published
27 March 2023
Modified
24 February 2025
KEV Added
—
Patch
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CVSS Score v3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0071 72.7th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-0494 is a high-severity Use After Free (CWE-416) vulnerability in Redhat Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions. Its CVSS base score is 7.8 (High).

Operationally, ranked in the top 27.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

where the X server runs privileged and remote code execution for ssh X forwarding sessions.

CWE(s)
CWE-416

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

x.org
x server
≤ 21.1.7
fedoraproject
fedora
36, 37
redhat
enterprise linux
8.0, 8.1, 9.0
redhat
enterprise linux aus
8.4, 8.6
redhat
enterprise linux desktop
7.0
redhat
enterprise linux eus
8.4, 8.6, 9.0
redhat
enterprise linux for ibm z systems
7.0, 8.0
redhat
enterprise linux for ibm z systems eus
8.4, 8.6
redhat
enterprise linux for power big endian
7.0
redhat
enterprise linux for power little endian
7.0, 8.0, 9.0
+8 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-416

Use-after-free exploits that achieve arbitrary code execution are blocked or significantly hardened by non-executable pages and ASLR.

References