CVE-2025-62231
published 2025-10-30CVE-2025-62231: A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned…
PriorityP344high7.3CVSS 3.1
AVLACLPRLUINSUCHILAH
EPSS
0.28%
20.2th percentile
A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a crash.
Affected
33 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | xorg-server | < xorg-server 2:21.1.7-3+deb12u11 (bookworm) | xorg-server 2:21.1.7-3+deb12u11 (bookworm) |
| debian | xwayland | < xorg-server 2:21.1.7-3+deb12u11 (bookworm) | xorg-server 2:21.1.7-3+deb12u11 (bookworm) |
| ibm | aix | — | — |
| ibm | aix | >= 7.2.5 < 7.2.5.12 | 7.2.5.12 |
| ibm | aix | >= 7.3.2 < 7.3.3.3 | 7.3.3.3 |
| ibm | vios | — | — |
| ibm | vios | >= 4.1.0 < 4.1.1.30 | 4.1.1.30 |
| msrc | azl3_wayland_1.22.0-1_on_azure_linux_3.0 | — | — |
| msrc | azl3_xorg-x11-server-xwayland_24.1.6-2_on_azure_linux_3.0 | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux_aus | — | — |
| redhat | enterprise_linux_aus | — | — |
| redhat | enterprise_linux_aus | — | — |
| redhat | enterprise_linux_els | — | — |
| redhat | enterprise_linux_els | — | — |
| redhat | enterprise_linux_eus | — | — |
| redhat | enterprise_linux_eus | — | — |
| redhat | enterprise_linux_tus | — | — |
| redhat | enterprise_linux_tus | — | — |
| redhat | enterprise_linux_update_services_for_sap_solutions | — | — |
| redhat | enterprise_linux_update_services_for_sap_solutions | — | — |
| redhat | enterprise_linux_update_services_for_sap_solutions | — | — |
CVSS provenance
nvdv3.17.3HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
osv7.3HIGH
vendor_debian7.3HIGH
vendor_redhat7.3HIGH
vendor_msrc7.1HIGH
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GHSA
GHSA-h4r4-6hvf-34r8: A flaw was identified in the X
ghsa_unreviewed·2025-10-30
CVE-2025-62231 [HIGH] CWE-190 GHSA-h4r4-6hvf-34r8: A flaw was identified in the X
A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a crash.
OSV
CVE-2025-62231: A flaw was identified in the X
osv·2025-10-30·CVSS 7.3
CVE-2025-62231 [HIGH] CVE-2025-62231: A flaw was identified in the X
A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a crash.
Ubuntu
X.Org X Server vulnerabilities
vendor_ubuntu·2025-10-29
CVE-2025-62230 X.Org X Server vulnerabilities
Title: X.Org X Server vulnerabilities
Summary: Several security issues were fixed in X.Org X Server.
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
certain memory operations. An attacker could use these issues to cause the
X Server to crash, leading to a denial of service, obtain sensitive
information, or possibly execute arbitrary code.
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
Red Hat
xorg: xmayland: Value overflow in XkbSetCompatMap()
vendor_redhat·2025-10-29·CVSS 7.3
CVE-2025-62231 [HIGH] CWE-190 xorg: xmayland: Value overflow in XkbSetCompatMap()
xorg: xmayland: Value overflow in XkbSetCompatMap()
A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a crash.
A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a crash.
Statement: The Red Hat Product Security team has rated this vulnerability as Moderate for default RHEL 8 and 9, where the X.Org server do
Microsoft
Xorg: xmayland: value overflow in xkbsetcompatmap()
vendor_msrc·2025-10-14·CVSS 7.1
CVE-2025-62231 [HIGH] CWE-190 Xorg: xmayland: value overflow in xkbsetcompatmap()
Xorg: xmayland: value overflow in xkbsetcompatmap()
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
redhat: redhat
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://learn.m
Debian
CVE-2025-62231: xorg-server - A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where i...
vendor_debian·2025·CVSS 7.3
CVE-2025-62231 [HIGH] CVE-2025-62231: xorg-server - A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where i...
A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a crash.
Scope: local
bookworm: resolved (fixed in 2:21.1.7-3+deb12u11)
bullseye: resolved (fixed in 2:1.20.11-1+deb11u17)
forky: resolved (fixed in 2:21.1.20-1)
sid: resolved (fixed in 2:21.1.20-1)
trixie: resolved (fixed in 2:21.1.16-1.3+deb13u1)
No detection rules found.
No public exploits indexed.
https://access.redhat.com/errata/RHSA-2025:19432https://access.redhat.com/errata/RHSA-2025:19433https://access.redhat.com/errata/RHSA-2025:19434https://access.redhat.com/errata/RHSA-2025:19435https://access.redhat.com/errata/RHSA-2025:19489https://access.redhat.com/errata/RHSA-2025:19623https://access.redhat.com/errata/RHSA-2025:19909https://access.redhat.com/errata/RHSA-2025:20958https://access.redhat.com/errata/RHSA-2025:20960https://access.redhat.com/errata/RHSA-2025:20961https://access.redhat.com/errata/RHSA-2025:21035https://access.redhat.com/errata/RHSA-2025:22040https://access.redhat.com/errata/RHSA-2025:22041https://access.redhat.com/errata/RHSA-2025:22051https://access.redhat.com/errata/RHSA-2025:22055https://access.redhat.com/errata/RHSA-2025:22056https://access.redhat.com/errata/RHSA-2025:22077https://access.redhat.com/errata/RHSA-2025:22096https://access.redhat.com/errata/RHSA-2025:22164https://access.redhat.com/errata/RHSA-2025:22167https://access.redhat.com/errata/RHSA-2025:22364https://access.redhat.com/errata/RHSA-2025:22365https://access.redhat.com/errata/RHSA-2025:22426https://access.redhat.com/errata/RHSA-2025:22427https://access.redhat.com/errata/RHSA-2025:22667https://access.redhat.com/errata/RHSA-2025:22729https://access.redhat.com/errata/RHSA-2025:22742https://access.redhat.com/errata/RHSA-2025:22753https://access.redhat.com/errata/RHSA-2026:0031https://access.redhat.com/errata/RHSA-2026:0033https://access.redhat.com/errata/RHSA-2026:0034https://access.redhat.com/errata/RHSA-2026:0035https://access.redhat.com/errata/RHSA-2026:0036https://access.redhat.com/security/cve/CVE-2025-62231https://bugzilla.redhat.com/show_bug.cgi?id=2402660https://lists.x.org/archives/xorg-announce/2025-October/003635.htmlhttp://www.openwall.com/lists/oss-security/2025/10/28/7https://lists.debian.org/debian-lts-announce/2025/10/msg00033.html
2025-10-30
Published