Integer overflow in IBM Aix
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 specially crafted input data, the value calculation may overflow, leading to memory corruption or a crash.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H.
EPSS exploit prediction
EPSS: 0.003 (21.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- IBM Aix — versions 7.3.4
- IBM Vios — versions 4.1.2.0
- X.org X Server
- X.org Xwayland — versions 0
- Debian Linux — versions 11.0
- Red Hat Enterprise Linux 10 — versions 0:24.1.5-5.el10_0, 0:24.1.5-5.el10_1
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 6 Extended Lifecycle Support - Extension — versions 0:1.1.0-25.el6_10.15
- Red Hat Enterprise Linux 7 Extended Lifecycle Support — versions 0:1.20.4-33.el7_9, 0:1.8.0-36.el7_9.3
- Red Hat Enterprise Linux 8 — versions 0:21.1.3-19.el8_10, 0:1.20.11-27.el8_10, 0:1.15.0-8.el8_10
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2025:19432 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2025:19433 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2025:19434 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2025:19435 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2025:19489 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2025:19623 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2025:19909 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2025:20958 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2025:20960 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2025:20961 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-62231?
- CVE-2025-62231 is a high-severity vulnerability in IBM Aix, classified under Integer Overflow or Wraparound. CVSS score: 7.3/10. Published 2025-10-30.
- How severe is CVE-2025-62231?
- High severity. CVSS v3 base score is 7.3 out of 10.