CVE catalog
CVE-2023-5574
xorg-server: CVE-2023-5574
- Severity
- High · CVSS 7.4
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.62% · Oct 25, 2026
A use-after-free flaw was found in xorg-x11-server-Xvfb. This issue occurs in Xvfb with 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 a screen 1 to a screen 0, a use-after-free issue may be triggered during shutdown or reset of the Xvfb server, allowing for possible escalation of privileges or denial of service.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | xorg-server | sid | 2:21.1.25-2 | vulnerable |
| Debian | xorg-server | forky | 2:21.1.25-2 | vulnerable |
| Debian | xorg-server | trixie | 2:21.1.16-1.3+deb13u3 | vulnerable |
| Debian | xorg-server | trixie-security | 2:21.1.16-1.3+deb13u4 | vulnerable |
| Debian | xorg-server | bookworm | 2:21.1.7-3+deb12u12 | vulnerable |
| Debian | xorg-server | bookworm-security | 2:21.1.7-3+deb12u13 | vulnerable |
| Opensuse | xwayland | tumbleweed | 23.2.2-2.1 | fixed |
| Ubuntu | xorg-server | pro | 2:1.20.5+git20191008-0ubuntu1 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.6-1ubuntu1 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.7-2ubuntu1 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.7-2ubuntu2 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.8-2ubuntu2 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.8-2ubuntu2.1 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.8-2ubuntu2.2 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.8-2ubuntu2.3 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.8-2ubuntu2.4 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.8-2ubuntu2.6 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.9-2ubuntu1.1~20.04.1 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.9-2ubuntu1.2~20.04.1 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.9-2ubuntu1.2~20.04.2 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.11-1ubuntu1~20.04.2 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.2 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.3 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.4 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.5 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.6 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.8 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.9 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.12 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.14 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.15 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.16 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.17 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.18 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.19 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.20 | vulnerable |
| Ubuntu | xorg-server | pro | 2:1.20.13-1ubuntu1~20.04.20+esm1 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.18.4-1ubuntu6.1~16.04.1 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.18.4-1ubuntu6.1~16.04.2 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.3-1ubuntu1~16.04.2 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.3-1ubuntu1~16.04.3 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.3-1ubuntu1~16.04.4 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.5-0ubuntu2~16.04.1 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4~16.04.1 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.1 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.2 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.3 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.4 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.5 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.6 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.6+esm1 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.6+esm3 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.6+esm4 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.6+esm5 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.6+esm6 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.6+esm7 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.6+esm8 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.6+esm9 | vulnerable |
| Ubuntu | xorg-server-hwe-16.04 | pro | 2:1.19.6-1ubuntu4.1~16.04.6+esm10 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.1-3ubuntu2.1~18.04.1 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.4-1ubuntu3~18.04.1 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.5+git20191008-0ubuntu1~18.04.1 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.1~18.04.1 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.1 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.2 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.3 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.4 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.5 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.6 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.7 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.8 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.9 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.10 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.11 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.11+esm1 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.11+esm2 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.11+esm3 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.11+esm4 | vulnerable |
| Ubuntu | xorg-server-hwe-18.04 | pro | 2:1.20.8-2ubuntu2.2~18.04.11+esm5 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:1.20.13-1ubuntu1 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:1.20.13-1ubuntu2 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:1.20.14-1ubuntu1 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.3-2ubuntu2 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.3-2ubuntu2.1 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.3-2ubuntu2.2 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.3-2ubuntu2.3 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.3-2ubuntu2.4 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.3-2ubuntu2.5 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.3-2ubuntu2.6 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.3-2ubuntu2.7 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.3-2ubuntu2.8 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.3-2ubuntu2.9 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.4-2ubuntu1.7~22.04.1 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.4-2ubuntu1.7~22.04.2 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.4-2ubuntu1.7~22.04.5 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.4-2ubuntu1.7~22.04.7 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.4-2ubuntu1.7~22.04.8 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.4-2ubuntu1.7~22.04.9 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.4-2ubuntu1.7~22.04.10 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.4-2ubuntu1.7~22.04.11 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.4-2ubuntu1.7~22.04.12 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.4-2ubuntu1.7~22.04.13 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.4-2ubuntu1.7~22.04.14 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.4-2ubuntu1.7~22.04.15 | vulnerable |
| Ubuntu | xorg-server | 22.04 | 2:21.1.4-2ubuntu1.7~22.04.16 | vulnerable |
| Ubuntu | xorg-server | 24.04 | 2:21.1.7-3ubuntu2 | vulnerable |
| Ubuntu | xorg-server | 24.04 | 2:21.1.7-3ubuntu2.1 | vulnerable |
| Ubuntu | xorg-server | 24.04 | 2:21.1.10-1ubuntu1 | vulnerable |
| Ubuntu | xorg-server | 24.04 | 2:21.1.11-2ubuntu1 | vulnerable |
| Ubuntu | xorg-server | 24.04 | 2:21.1.12-1ubuntu1 | vulnerable |
| Ubuntu | xorg-server | 24.04 | 2:21.1.12-1ubuntu1.1 | vulnerable |
| Ubuntu | xorg-server | 24.04 | 2:21.1.12-1ubuntu1.2 | vulnerable |
| Ubuntu | xorg-server | 24.04 | 2:21.1.12-1ubuntu1.3 | vulnerable |
| Ubuntu | xorg-server | 24.04 | 2:21.1.12-1ubuntu1.4 | vulnerable |
| Ubuntu | xorg-server | 24.04 | 2:21.1.12-1ubuntu1.5 | vulnerable |
| Ubuntu | xorg-server | 24.04 | 2:21.1.12-1ubuntu1.6 | vulnerable |
| Ubuntu | xorg-server | 24.04 | 2:21.1.12-1ubuntu1.8 | vulnerable |
| Ubuntu | xorg-server | 24.04 | 2:21.1.12-1ubuntu1.9 | vulnerable |
| Ubuntu | xorg-server | 25.10 | 2:21.1.16-1ubuntu1 | vulnerable |
| Ubuntu | xorg-server | 25.10 | 2:21.1.18-1ubuntu1 | vulnerable |
| Ubuntu | xorg-server | 25.10 | 2:21.1.18-1ubuntu1.1 | vulnerable |
| Ubuntu | xorg-server | 26.10 | 2:21.1.22-1ubuntu1 | vulnerable |
| Ubuntu | xorg-server | 26.10 | 2:21.1.22-1ubuntu4 | vulnerable |
| Ubuntu | xorg-server | 26.10 | 2:21.1.24-1ubuntu1 | vulnerable |
| Ubuntu | xorg-server | 26.04 | 2:21.1.18-1ubuntu1 | vulnerable |
| Ubuntu | xorg-server | 26.04 | 2:21.1.21-1ubuntu1 | vulnerable |
| Ubuntu | xorg-server | 26.04 | 2:21.1.22-1ubuntu1 | vulnerable |
| Ubuntu | xorg-server | 26.04 | 2:21.1.22-1ubuntu1.2 | vulnerable |
| Ubuntu | xorg-server | 26.04 | 2:21.1.22-1ubuntu1.3 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | xorg-server | source | sid | (unfixed) | not yet assigned | Not reported | [1055426] |
| Debian | xorg-server | source | forky | (unfixed) | not yet assigned | Not reported | [1055426] |
| Debian | xorg-server | source | trixie | (unfixed) | not yet assigned | Not reported | [1055426] |
| Debian | xorg-server | source | bookworm | (unfixed) | not yet assigned | Not reported | [1055426] |
| Opensuse | xwayland | rpm | tumbleweed | 23.2.2-2.1 | Not reported | OPENSUSE-SU-2024:13467-1 | Not reported |
Notes
[trixie] xorg-server: Minor issue, revisit when fixed upstream [bookworm] xorg-server: Minor issue, revisit when fixed upstream
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2023_4269-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-5574]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-5574]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:13467-1]
- [https://security-tracker.debian.org/tracker/CVE-2023-5574]
- [https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-5574.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-1248.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]