Vulnerability Description
A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.
CVSS Score
6.1
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2025:10258
- https://access.redhat.com/errata/RHSA-2025:9303
- https://access.redhat.com/errata/RHSA-2025:9304
- https://access.redhat.com/security/cve/CVE-2025-49177
- https://bugzilla.redhat.com/show_bug.cgi?id=2369955
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/ab02fb96b1c701c3bb47617d965
- https://www.x.org/wiki/Development/Security/
FAQ
What is CVE-2025-49177?
CVE-2025-49177 is a vulnerability with a CVSS score of 6.1 (MEDIUM). A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.
How severe is CVE-2025-49177?
CVE-2025-49177 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-49177?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.