7.3

CVE-2025-62231: debian debian_linux Integer Overflow or Wraparound

CVSS: 7.3v3.1HighAnalyzed
AliasesUBUNTU-CVE-2025-62231DEBIAN-CVE-2025-62231
Published 30-10-2025Last modified 20-04-2026
Open JSON

Vulnerability summary

CVE-2025-62231 is a high (CVSS 7.3) Integer Overflow or Wraparound vulnerability in debian debian_linux. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 20.9% of scored vulnerabilities.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.3/10
010
High · v3.1 (CVE.org)
EPSS score
0.30%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 50 · Related 14
DLA-4353-1DSA-6044-1MGASA-2025-0263OPENSUSE-SU-2025:15683-1OPENSUSE-SU-2025:15684-1OPENSUSE-SU-2025:20099-1

Timeline

  1. 30-10-2025
    PublishedVulnerability first disclosed.
  2. 20-04-2026
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

+0.02 pp

From 0.28% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.30%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Redhat6 products
Ubuntu4 products
  • xorg-serverAll versions (No fix recorded) | < 2:21.1.4-2ubuntu1.7~22.04.16 | < 2:21.1.12-1ubuntu1.5 | < 2:21.1.18-1ubuntu1.1 | < 2:21.1.21-1ubuntu1
  • xorg-server-hwe-16.04All versions (No fix recorded)
  • xorg-server-hwe-18.04All versions (No fix recorded)
  • xwayland< 2:22.1.1-1ubuntu0.20 | < 2:23.2.6-1ubuntu0.7 | < 2:24.1.6-1ubuntu1.1 | < 2:24.1.9-1
Debian3 products
  • xorg-server< 2:21.1.7-3+deb12u11 | < 2:21.1.16-1.3+deb13u1 | < 2:21.1.20-1
  • xwaylandAll versions (No fix recorded) | < 2:24.1.9-1
  • debian_linuxEOL11.0
Ibm2 products
  • aix≥ 7.2.5, < 7.2.5.12 | ≥ 7.3.2, < 7.3.3.3 | 7.3.4
  • vios≥ 4.1.0, < 4.1.1.30 | 4.1.2.0
X.org2 products

5 vendors · 17 products

References

43 links
Show all 43 references