CVE-2025-62230 | Xorg: xwayland: use-after-free in xkb client resource removal

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.

Published: 2025-10-30 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2025-62230 is rated Low Risk (34.5/100): CVSS High severity, with low exploitation likelihood (EPSS 0.24%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-62230

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.01% 0.24% +0.22%
2 2025-10-30 0.01%

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-62230

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.3 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
1.8 5.5 [email protected]

Weakness enumeration for CVE-2025-62230

GitHub Security Advisory for CVE-2025-62230

GHSA-892r-x96w-jh76 · Severity: high — A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client...

OS Trackers for CVE-2025-62230

vendor priority summary link
alpine CVE-2025-62230: 2 source package rows (xorg-server, xwayland); 5 state rows across 3 repos (3.22-community, 3.23-community, edge-community); fixed 5, open 0. https://security.alpinelinux.org/vuln/CVE-2025-62230
debian not yet assigned CVE-2025-62230 not yet assigned priority: Debian including 2 source packages (xorg-server, xwayland), 9 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 7, open 2. https://security-tracker.debian.org/tracker/CVE-2025-62230
redhat medium https://access.redhat.com/security/cve/CVE-2025-62230
suse high https://www.suse.com/security/cve/CVE-2025-62230/
ubuntu medium CVE-2025-62230 medium priority: Ubuntu including 7 source packages (xorg, xorg-hwe-16.04, …), 46 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): DNE 16, not-affected 12, released 10, needs-triage 8. https://ubuntu.com/security/CVE-2025-62230

Affected software / configurations for CVE-2025-62230

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-62230

URL Tags
https://access.redhat.com/errata/RHSA-2025:19432
https://access.redhat.com/errata/RHSA-2025:19433
https://access.redhat.com/errata/RHSA-2025:19434
https://access.redhat.com/errata/RHSA-2025:19435
https://access.redhat.com/errata/RHSA-2025:19489
https://access.redhat.com/errata/RHSA-2025:19623
https://access.redhat.com/errata/RHSA-2025:19909
https://access.redhat.com/errata/RHSA-2025:20958
https://access.redhat.com/errata/RHSA-2025:20960
https://access.redhat.com/errata/RHSA-2025:20961
https://access.redhat.com/errata/RHSA-2025:21035
https://access.redhat.com/errata/RHSA-2025:22040
https://access.redhat.com/errata/RHSA-2025:22041
https://access.redhat.com/errata/RHSA-2025:22051
https://access.redhat.com/errata/RHSA-2025:22055
https://access.redhat.com/errata/RHSA-2025:22056
https://access.redhat.com/errata/RHSA-2025:22077
https://access.redhat.com/errata/RHSA-2025:22096
https://access.redhat.com/errata/RHSA-2025:22164
https://access.redhat.com/errata/RHSA-2025:22167
https://access.redhat.com/errata/RHSA-2025:22364
https://access.redhat.com/errata/RHSA-2025:22365
https://access.redhat.com/errata/RHSA-2025:22426
https://access.redhat.com/errata/RHSA-2025:22427
https://access.redhat.com/errata/RHSA-2025:22667
https://access.redhat.com/errata/RHSA-2025:22729
https://access.redhat.com/errata/RHSA-2025:22742
https://access.redhat.com/errata/RHSA-2025:22753
https://access.redhat.com/errata/RHSA-2026:0031
https://access.redhat.com/errata/RHSA-2026:0033
https://access.redhat.com/errata/RHSA-2026:0034
https://access.redhat.com/errata/RHSA-2026:0035
https://access.redhat.com/errata/RHSA-2026:0036
https://access.redhat.com/security/cve/CVE-2025-62230
https://bugzilla.redhat.com/show_bug.cgi?id=2402653
https://lists.x.org/archives/xorg-announce/2025-October/003635.html
http://www.openwall.com/lists/oss-security/2025/10/28/7
https://lists.debian.org/debian-lts-announce/2025/10/msg00033.html
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