CVE-2025-26594: X.org: xwayland: use-after-free of the root cursor
First published: Wed Feb 12 2025(Updated: )
A use-after-free flaw was found in X.Org and Xwayland. The root cursor is referenced in the X server as a global variable. If a client frees the root cursor, the internal reference points to freed memory and causes a use-after-free.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/xorg-server | <=2:1.20.11-1+deb11u13<=2:21.1.7-3+deb12u8<=2:21.1.15-3 | 2:1.20.11-1+deb11u15 2:21.1.7-3+deb12u9 2:21.1.16-1 |
| debian/xwayland | <=2:22.1.9-1<=2:24.1.5-1 | 2:24.1.6-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://access.redhat.com/security/cve/CVE-2025-26594
- https://bugzilla.redhat.com/show_bug.cgi?id=2345248
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-26594
- https://nvd.nist.gov/vuln/detail/CVE-2025-26594
- https://launchpad.net/bugs/cve/CVE-2025-26594
- https://security-tracker.debian.org/tracker/CVE-2025-26594
- https://ubuntu.com/security/CVE-2025-26594
- https://lists.x.org/archives/xorg-announce/2025-February/003584.html
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/01642f263f12becf803b19be4db95a4a83f94acc
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/b0a09ba6020147961acc62d9c73d807b4cccd9f7
Frequently Asked Questions
What is the severity of CVE-2025-26594?
CVE-2025-26594 has been classified as a moderate severity use-after-free vulnerability.
How do I fix CVE-2025-26594?
To remediate CVE-2025-26594, update the xorg-server and xwayland packages to their latest versions as specified by your distribution.
Which versions of xorg-server are affected by CVE-2025-26594?
The affected versions of xorg-server include 2:1.20.11-1+deb11u13, 2:1.20.11-1+deb11u14, 2:21.1.7-3+deb12u8, and 2:21.1.15-3.
Which versions of xwayland are affected by CVE-2025-26594?
The affected versions of xwayland are 2:22.1.9-1 and 2:24.1.5-1.
What component does CVE-2025-26594 impact?
CVE-2025-26594 impacts the X.Org and Xwayland components, specifically involving a use-after-free issue with the root cursor.
- collector/mitre-cve
- source/MITRE
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2025-26594
- collector/nvd-api
- source/NVD
- collector/usn-cve
- source/Ubuntu
- collector/nvd-cve
- agent/description
- agent/references
- agent/title
- agent/weakness
- agent/type
- agent/severity
- agent/last-modified-date
- agent/first-publish-date
- agent/author
- agent/softwarecombine
- agent/trending
- collector/security-tracker-debian
- source/Debian
- agent/software-canonical-lookup
- agent/tags
- agent/event
- collector/epss-latest
- source/FIRST
- agent/epss
- agent/source
- package-manager/debian