vulnerability
Red Hat: CVE-2023-0494: DeepCopyPointerClasses use-after-free leads to privilege elevation (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | Feb 7, 2023 | Feb 8, 2023 | Aug 11, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
Feb 7, 2023
Added
Feb 8, 2023
Modified
Aug 11, 2025
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.
Solutions
no-fix-redhat-rpm-packageredhat-upgrade-tigervncredhat-upgrade-tigervnc-debuginforedhat-upgrade-tigervnc-debugsourceredhat-upgrade-tigervnc-iconsredhat-upgrade-tigervnc-licenseredhat-upgrade-tigervnc-selinuxredhat-upgrade-tigervnc-serverredhat-upgrade-tigervnc-server-appletredhat-upgrade-tigervnc-server-debuginforedhat-upgrade-tigervnc-server-minimalredhat-upgrade-tigervnc-server-minimal-debuginforedhat-upgrade-tigervnc-server-moduleredhat-upgrade-tigervnc-server-module-debuginforedhat-upgrade-xorg-x11-server-commonredhat-upgrade-xorg-x11-server-debuginforedhat-upgrade-xorg-x11-server-debugsourceredhat-upgrade-xorg-x11-server-develredhat-upgrade-xorg-x11-server-sourceredhat-upgrade-xorg-x11-server-xdmxredhat-upgrade-xorg-x11-server-xdmx-debuginforedhat-upgrade-xorg-x11-server-xephyrredhat-upgrade-xorg-x11-server-xephyr-debuginforedhat-upgrade-xorg-x11-server-xnestredhat-upgrade-xorg-x11-server-xnest-debuginforedhat-upgrade-xorg-x11-server-xorgredhat-upgrade-xorg-x11-server-xorg-debuginforedhat-upgrade-xorg-x11-server-xvfbredhat-upgrade-xorg-x11-server-xvfb-debuginforedhat-upgrade-xorg-x11-server-xwaylandredhat-upgrade-xorg-x11-server-xwayland-debuginforedhat-upgrade-xorg-x11-server-xwayland-debugsource
References
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