Use After Free in X.org X Server
CVE-2023-5380
A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if the pointer is warped from within a window on one screen to the root window of the other screen and if the original window is destroyed followed by another window being destroyed.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- X.org X Server
- X.org Xwayland
- Debian Linux — versions 11.0, 12.0
- Fedoraproject Fedora — versions 37, 38, 39
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7 — versions 0:1.8.0-26.el7_9
- Red Hat Enterprise Linux 8 — versions 0:1.20.11-22.el8, 0:1.13.1-8.el8
- Red Hat Enterprise Linux 9 — versions 0:1.20.11-24.el9, 0:1.13.1-8.el9
- Red Hat Enterprise Linux — versions 7.0, 8.0, 9.0
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2023:7428 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:2169 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:2298 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:2995 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:3067 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2023-5380 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking)
- lists.x.org/archives/xorg-announce/2023-October/003430.html (Patch, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-5380?
- CVE-2023-5380 is a medium-severity vulnerability in X.org X Server, classified under Use After Free. CVSS score: 4.7/10. Published 2023-10-25.
- How severe is CVE-2023-5380?
- Medium severity. CVSS v3 base score is 4.7 out of 10.