Memory Read Flaw in XFIXES Extension for Affected Products
CVE-2025-49177

6.1MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 9.4 Extended Update Support
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Vendor
CVE Published:
17 June 2025

What is CVE-2025-49177?

A flaw exists in the XFIXES extension, where the XFixesSetClientDisconnectMode handler fails to properly validate the length of requests. This oversight allows a potential attacker to exploit the vulnerability, enabling them to access unintended memory from previous requests. Such an exploit could result in the exposure of sensitive information, leading to potential data breaches and compromised system integrity.

Affected Version(s)

Red Hat Enterprise Linux 10 0:24.1.5-4.el10_0

Red Hat Enterprise Linux 9.4 Extended Update Support 0:22.1.9-6.el9_4

References

https://access.redhat.com/errata/RHSA-2025:10258
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:9304
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-49177
vdb-entryx_refsource_REDHAT

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Julian Suleder and Nils Emmerich for reporting this issue.
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