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CVE-2025-49177

Good to know:

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Date: June 17, 2025

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.

Severity Score

Related Resources (7)

https://bugzilla.redhat.com/show_bug.cgi?id=2369955
https://access.redhat.com/security/cve/CVE-2025-49177
https://access.redhat.com/errata/RHSA-2025:10258
https://nvd.nist.gov/vuln/detail/CVE-2025-49177
https://access.redhat.com/errata/RHSA-2025:9304
https://access.redhat.com/errata/RHSA-2025:9303
https://www.mend.io/vulnerability-database/CVE-2025-49177

Severity Score

Weakness Type (CWE)

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

Top Fix

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Upgrade Version

Upgrade to version https://gitlab.freedesktop.org/xorg/xserver.git - xorg-server-21.1.17;https://gitlab.freedesktop.org/xorg/xserver.git - xwayland-24.1.7

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): LOW

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