| Name | CVE-2021-3472 |
| Description | A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2627-1, DSA-4893-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| xorg-server (PTS) | buster | 2:1.20.4-1+deb10u4 | fixed |
| buster (security) | 2:1.20.4-1+deb10u9 | fixed |
| bullseye (security), bullseye | 2:1.20.11-1+deb11u6 | fixed |
| bookworm | 2:21.1.7-3 | fixed |
| sid, trixie | 2:21.1.8-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
Fixed by: https://gitlab.freedesktop.org/xorg/xserver/-/commit/7aaf54a1884f71dc363f0b884e57bcb67407a6cd
https://lists.x.org/archives/xorg-announce/2021-April/003080.html