Use-After-Free Vulnerability in X.Org X Server and Xwayland
CVE-2025-62229

7.3HIGH

Key Information:

Vendor

X.org

Status
Xwayland
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6 Extended Lifecycle Support - Extension
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Vendor
CVE Published:
30 October 2025

What is CVE-2025-62229?

A flaw exists in the X.Org X server and Xwayland, specifically related to improper error handling during the processing of X11 Present extension notifications. This vulnerability can result in dangling pointers, which create a use-after-free condition, posing risks that include memory corruption or unexpected crashes. Such occurrences can potentially allow an attacker to execute arbitrary code or trigger a denial of service, compromising system stability and security.

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Affected Version(s)

Red Hat Enterprise Linux 10 0:24.1.5-5.el10_0

Red Hat Enterprise Linux 10 0:24.1.5-5.el10_1

Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION 0:1.1.0-25.el6_10.15

References

https://access.redhat.com/errata/RHSA-2025:19432
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19433
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19434
vendor-advisoryx_refsource_REDHAT

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
Low
Integrity:
High
Availability:
Low
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 Jan-Niklas Sohn (Trend Micro Zero Day Initiative) for reporting this issue.
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