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Description

A flaw was found in the X.Org X server and Xwayland when processing X11 Present extension notifications. Improper error handling during notification creation can leave dangling pointers that lead to a use-after-free condition. This can cause memory corruption or a crash, potentially allowing an attacker to execute arbitrary code or cause a denial of service.

PUBLISHED Reserved 2025-10-09 | Published 2025-10-30 | Updated 2025-10-30 | Assigner redhat




HIGH: 7.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

Problem types

Use After Free

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affected

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affected

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unknown

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affected

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affected

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affected

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affected

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affected

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affected

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affected

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affected

Timeline

2025-10-09:Reported to Red Hat.
2025-10-29:Made public.

Credits

Red Hat would like to thank Jan-Niklas Sohn (Trend Micro Zero Day Initiative) for reporting this issue.

References

access.redhat.com/security/cve/CVE-2025-62229 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2402649 (RHBZ#2402649) issue-tracking

cve.org (CVE-2025-62229)

nvd.nist.gov (CVE-2025-62229)

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