High severity · published Oct 30, 2025
CVE-2025-62230
A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup
7.3
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
Low
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AI
Aix · Ibm
7.2.5 before 7.2.5.12; 7.3.2 before 7.3.3.3; 7.3.4 · source: NVD
DL
Debian Linux · Debian
11.0 · source: NVD
EL
Enterprise Linux · Redhat
8.0; 9.0; 10.0 · source: NVD
EL
Enterprise Linux Aus · Redhat
8.2; 8.4; 8.6 · source: NVD
EL
Enterprise Linux Els · Redhat
6.0; 7.0 · source: NVD
EL
Enterprise Linux Eus · Redhat
8.4; 9.4 · source: NVD
EL
Enterprise Linux Tus · Redhat
8.6; 8.8 · source: NVD
EL
Enterprise Linux Update Services For Sap Solutions · Redhat
8.6; 8.8; 9.0; 9.2 · source: NVD
VI
Vios · Ibm
4.1.0 before 4.1.1.30; 4.1.2.0 · source: NVD
XS
X Server · X.org
before 21.1.19 · source: NVD
XW
Xwayland · X.org
before 24.1.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-62230
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-62230
Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:19432
Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:19433
Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:19434
Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:19435
Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:19489
Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:19623
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