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HIGH · 7.3

CVE-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 short overflow. If an attacker sends spe...

Vulnerability Description

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.

CVSS Score

7.3

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
HIGH

Affected Products

VendorProductVersions
X.OrgX Server< 21.1.19
X.OrgXwayland< 24.1.9
IbmVios>= 4.1.0, < 4.1.1.30
IbmAix>= 7.2.5, < 7.2.5.12
DebianDebian Linux11.0
RedhatEnterprise Linux8.0
RedhatEnterprise Linux Aus8.2
RedhatEnterprise Linux Els6.0
RedhatEnterprise Linux Eus8.4
RedhatEnterprise Linux Tus8.6
RedhatEnterprise Linux Update Services For Sap Solutions8.6

Related Weaknesses (CWE)

CWE-190

References

FAQ

What is CVE-2025-62231?

CVE-2025-62231 is a vulnerability with a CVSS score of 7.3 (HIGH). 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 spe...

How severe is CVE-2025-62231?

CVE-2025-62231 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-62231?

Check the references section above for vendor advisories and patch information. Affected products include: X.Org X Server, X.Org Xwayland, Ibm Vios, Ibm Aix, Debian Debian Linux.