Use After Free in IBM Aix
CVE-2025-62230
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.
Vulnerability class: Use-After-Free
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 (19.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.4% 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-2025-62230?
- CVE-2025-62230 is a high-severity vulnerability in IBM Aix, classified under Use After Free. CVSS score: 7.3/10. Published 2025-10-30.
- How severe is CVE-2025-62230?
- High severity. CVSS v3 base score is 7.3 out of 10.