Use After Free in X.org X_server
CVE-2023-0494
A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to loca…
Vulnerability class: Use-After-Free
EPSS: 0.009 (55.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- X.org X_server
- Fedoraproject Fedora — versions 36, 37
- Redhat Enterprise_linux — versions 8.0, 8.1, 9.0
- Redhat Enterprise_linux_aus — versions 8.4, 8.6
- Redhat Enterprise_linux_desktop — versions 7.0
- Redhat Enterprise_linux_eus — versions 8.4, 8.6, 9.0
- Redhat Enterprise_linux_for_ibm_z_systems — versions 7.0, 8.0
- Redhat Enterprise_linux_for_ibm_z_systems_eus — versions 8.4, 8.6
- Redhat Enterprise_linux_for_power_big_endian — versions 7.0
- Redhat Enterprise_linux_for_power_little_endian — versions 7.0, 8.0, 9.0
Weakness classification (CWE)
References
- secalert@redhat.com (Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Mailing List, Vendor Advisory)
- secalert@redhat.com (Patch)
- secalert@redhat.com (vendor-advisory)
Frequently asked questions
- What is CVE-2023-0494?
- CVE-2023-0494 is a high-severity vulnerability in X.org X_server, classified under Use After Free. CVSS score: 7.8/10. Published 2023-03-27.
- How severe is CVE-2023-0494?
- High severity. CVSS v3 base score is 7.8 out of 10.