vulnerability
Ubuntu: (Multiple Advisories) (CVE-2024-21885): X.Org X Server vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | Jan 16, 2024 | Jan 17, 2024 | Apr 16, 2026 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
Jan 16, 2024
Added
Jan 17, 2024
Modified
Apr 16, 2026
Description
A flaw was found in X.Org server. In the XISendDeviceHierarchyEvent function, it is possible to exceed the allocated array length when certain new device IDs are added to the xXIHierarchyInfo struct. This can trigger a heap buffer overflow condition, which may lead to an application crash or remote code execution in SSH X11 forwarding environments.
Solutions
ubuntu-pro-upgrade-xserver-xorg-coreubuntu-pro-upgrade-xwaylandubuntu-upgrade-xserver-xorg-coreubuntu-upgrade-xwayland
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.