VULNERABILITY INTELLIGENCE
CVE-2024-21885
CVSS score7.8 HIGH
EPSS probability1.42%
CISA KEVNot currently listed
Published2024-02-28
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
Weakness classification
- secalert@redhat.com: CWE-122