CVE-2024-21885
7.8
HIGH
CVSS 3.1
EPSS 0.24%
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.
How to fix CVE-2024-21885
To remediate CVE-2024-21885, upgrade the affected package to a fixed version below.
- —upgrade to 2:1.20.11-1+deb11u11 or later
- —no fix listed
Is CVE-2024-21885 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2:1.20.11-1+deb11u11
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |