vulnerability
Alma Linux: CVE-2023-0494: Important: tigervnc security update (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | Feb 8, 2023 | Feb 13, 2023 | Apr 17, 2026 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
Feb 8, 2023
Added
Feb 13, 2023
Modified
Apr 17, 2026
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
alma-upgrade-tigervncalma-upgrade-tigervnc-iconsalma-upgrade-tigervnc-licensealma-upgrade-tigervnc-selinuxalma-upgrade-tigervnc-serveralma-upgrade-tigervnc-server-minimalalma-upgrade-tigervnc-server-modulealma-upgrade-xorg-x11-server-commonalma-upgrade-xorg-x11-server-develalma-upgrade-xorg-x11-server-sourcealma-upgrade-xorg-x11-server-xdmxalma-upgrade-xorg-x11-server-xephyralma-upgrade-xorg-x11-server-xnestalma-upgrade-xorg-x11-server-xorgalma-upgrade-xorg-x11-server-xvfbalma-upgrade-xorg-x11-server-xwayland
References
- CVE-2023-0494
- https://attackerkb.com/topics/CVE-2023-0494
- CWE-416
- EUVD-EUVD-2023-12542
- https://errata.almalinux.org/8/ALSA-2023-0662.html
- https://errata.almalinux.org/8/ALSA-2023-2805.html
- https://errata.almalinux.org/8/ALSA-2023-2806.html
- https://errata.almalinux.org/9/ALSA-2023-0622.html
- https://errata.almalinux.org/9/ALSA-2023-2248.html
- https://errata.almalinux.org/9/ALSA-2023-2249.html
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-12542
Rapid7 Labs
2026 Global Threat Landscape Report
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