Use After Free in X.org Xwayland
CVE-2025-62229
A flaw was found in the X.Org X server and Xwayland when processing X11 Present extension notifications. Improper error handling during notification creation can leave dangling pointers that lead to a use-after-free condition. This can cause memory corruption or a crash, potentially allowing an attacker to execute arbitrary code or cause a denial of service.
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:L/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (38.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- X.org Xwayland — versions 1.15.0
- 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
- Red Hat Enterprise Linux 8.2 Advanced Update Support — versions 0:1.9.0-15.el8_2.15, 0:1.20.6-5.el8_2
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support — versions 0:1.11.0-8.el8_4.14, 0:1.20.10-3.el8_4
- Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On — versions 0:1.11.0-8.el8_4.14, 0:1.20.10-3.el8_4
- Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support — versions 0:1.12.0-6.el8_6.15, 0:1.20.11-6.el8_6, 0:21.1.3-2.el8_6.5
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2025:19432 (vendor-advisory)
- access.redhat.com/errata/RHSA-2025:19433 (vendor-advisory)
- access.redhat.com/errata/RHSA-2025:19434 (vendor-advisory)
- access.redhat.com/errata/RHSA-2025:19435 (vendor-advisory)
- access.redhat.com/errata/RHSA-2025:19489 (vendor-advisory)
- access.redhat.com/errata/RHSA-2025:19623 (vendor-advisory)
- access.redhat.com/errata/RHSA-2025:19909 (vendor-advisory)
- access.redhat.com/errata/RHSA-2025:20958 (vendor-advisory)
- access.redhat.com/errata/RHSA-2025:20960 (vendor-advisory)
- access.redhat.com/errata/RHSA-2025:20961 (vendor-advisory)
Frequently asked questions
- What is CVE-2025-62229?
- CVE-2025-62229 is a high-severity vulnerability in X.org Xwayland, classified under Use After Free. CVSS score: 7.3/10. Published 2025-10-30.
- How severe is CVE-2025-62229?
- High severity. CVSS v3 base score is 7.3 out of 10.