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 breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
Low
Affected products
- X.Org / xwayland0 – 24.1.7
References
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2025:10258
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2025:9303
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2025:9304
- VENDOR_ADVISORYhttps://access.redhat.com/security/cve/CVE-2025-49177
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=2369955
- MISChttps://gitlab.freedesktop.org/xorg/xserver/-/commit/ab02fb96b1c701c3bb47617d965522c34befa6af
- MISChttps://www.x.org/wiki/Development/Security/
Updated 31m ago · 8 sources