CVE-2023-0494: Fedoraproject Fedora
High severity, CVSS 7.8. EPSS: 0.9% chance of exploitation in the next 30 days.
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.
Affected products
- Fedoraproject Fedora: version 36 only; version 37 only
- Red Hat Enterprise Linux: version 8.0 only; version 8.1 only; version 9.0 only
- Red Hat Enterprise Linux Aus: version 8.4 only; version 8.6 only
- Red Hat Enterprise Linux Desktop: version 7.0 only
- Red Hat Enterprise Linux Eus: version 8.4 only; version 8.6 only; version 9.0 only
- Red Hat Enterprise Linux For IBM Z Systems: version 7.0 only; version 8.0 only
- Red Hat Enterprise Linux For IBM Z Systems Eus: version 8.4 only; version 8.6 only
- Red Hat Enterprise Linux For Power Big Endian: version 7.0 only
- Red Hat Enterprise Linux For Power Little Endian: version 7.0 only; version 8.0 only; version 9.0 only
- Red Hat Enterprise Linux For Power Little Endian Eus: version 8.4 only; version 8.6 only
- Red Hat Enterprise Linux For Scientific Computing: version 7.0 only
- Red Hat Enterprise Linux Server: version 7.0 only
- Red Hat Enterprise Linux Server Aus: version 8.2 only
- Red Hat Enterprise Linux Server For Power Little Endian Update Services For SAP Solutions: version 8.1 only; version 8.2 only; version 8.4 only; version 8.6 only; version 9.0 only
- Red Hat Enterprise Linux Server Tus: version 8.2 only; version 8.4 only; version 8.6 only
- Red Hat Enterprise Linux Server Update Services For SAP Solutions: version 8.2 only
- Red Hat Enterprise Linux Server Workstation: version 7.0 only
- X.org X Server: before 21.1.7 (fixed in 21.1.7)
Published 2023-03-27. Last modified 2026-06-17.