High [CVE-2025-62230] Xorg: xwayland: use-after-free in xkb client resource removal
This high-severity Red Hat Linux advisory covers CVE-2025-62230 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION, Red Hat Enterprise Linux 7 Extended Lifecycle Support.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published
Summary
A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition.
This can cause memory corruption or a crash when affected clients disconnect. The Red Hat Product Security team has rated this vulnerability as Moderate.
The flaw is a use-after-free in Xkb client resource cleanup that could lead to integrity and availability impacts if exploited. However, the X.Org server does not run with root privileges in Red Hat Enterprise Linux 8 and 9, which limits the potential impact and prevents full system compromise.
Red Hat severity: Moderate — CVSS 7.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H). Weakness: CWE-416.
Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; and 12 more.
Is CVE-2025-62230 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2025-62230 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2025-62230?
Upgrade to a fixed release named by Red Hat:
- xorg-x11-server-Xwayland-0:24.1.5-5.el10_0
- xorg-x11-server-Xwayland-0:24.1.5-5.el10_1
- tigervnc-0:1.1.0-25.el6_10.15
- xorg-x11-server-0:1.20.4-33.el7_9
- tigervnc-0:1.8.0-36.el7_9.3
- xorg-x11-server-Xwayland-0:21.1.3-19.el8_10
- xorg-x11-server-0:1.20.11-27.el8_10
- tigervnc-0:1.15.0-8.el8_10
- tigervnc-0:1.9.0-15.el8_2.15
- xorg-x11-server-0:1.20.6-5.el8_2
- tigervnc-0:1.11.0-8.el8_4.14
- xorg-x11-server-0:1.20.10-3.el8_4
38 more fixed releases are listed below.
Confirm against the vendor advisory before you patch.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 5 days ago·verify at source
- xorg-x11-server-Xwayland-0:24.1.5-5.el10_0
- xorg-x11-server-Xwayland-0:24.1.5-5.el10_1
- tigervnc-0:1.1.0-25.el6_10.15
- xorg-x11-server-0:1.20.4-33.el7_9
- tigervnc-0:1.8.0-36.el7_9.3
- xorg-x11-server-Xwayland-0:21.1.3-19.el8_10
- xorg-x11-server-0:1.20.11-27.el8_10
- tigervnc-0:1.15.0-8.el8_10
- tigervnc-0:1.9.0-15.el8_2.15
- xorg-x11-server-0:1.20.6-5.el8_2
- tigervnc-0:1.11.0-8.el8_4.14
- xorg-x11-server-0:1.20.10-3.el8_4
- tigervnc-0:1.12.0-6.el8_6.15
- xorg-x11-server-0:1.20.11-6.el8_6
- xorg-x11-server-Xwayland-0:21.1.3-2.el8_6.5
- tigervnc-0:1.12.0-15.el8_8.16
- xorg-x11-server-0:1.20.11-17.el8_8
- xorg-x11-server-Xwayland-0:21.1.3-12.el8_8
- xorg-x11-server-0:1.20.11-32.el9_6
- tigervnc-0:1.14.1-9.el9_6
- xorg-x11-server-Xwayland-0:23.2.7-5.el9_6
- tigervnc-0:1.15.0-6.el9_7
- xorg-x11-server-Xwayland-0:23.2.7-5.el9_7
- xorg-x11-server-0:1.20.11-32.el9_7
- tigervnc-0:1.11.0-22.el9_0.16
- xorg-x11-server-0:1.20.11-12.el9_0
- xorg-x11-server-Xwayland-0:21.1.3-4.el9_0
- tigervnc-0:1.12.0-14.el9_2.13
- xorg-x11-server-0:1.20.11-19.el9_2
- xorg-x11-server-Xwayland-0:21.1.3-9.el9_2
- tigervnc-0:1.13.1-8.el9_4.8
- xorg-x11-server-0:1.20.11-27.el9_4
- xorg-x11-server-Xwayland-0:22.1.9-7.el9_4
- RHSA-2025:19435
- RHSA-2025:21035
- RHSA-2025:22667
- RHSA-2025:22040
- RHSA-2025:22096
- RHSA-2025:19432
- RHSA-2025:19434
- RHSA-2025:19909
- RHSA-2025:22077
- RHSA-2025:22729
- RHSA-2025:22167
- RHSA-2025:22753
- RHSA-2025:22041
- RHSA-2025:22427
- RHSA-2026:0035
- RHSA-2025:22164
- RHSA-2025:22426
Official advisory · high-confidence parse· fetched 5 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Official advisory · high-confidence parse· fetched 5 days ago·verify at source
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