Debian bullseye
Source: Debian Security Tracker
xorg-server→ fixed in2:1.20.11-1urgency: not yet assignedsudo apt-get install --only-upgrade -y xorg-server
Back to CVE digest
CVE-2021-3472 · cross-distro fix matrix
CVE-2021-3472: 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.
Affects 8 Linux releases across 13 (distro × package) combinations.
Fix per ecosystem
Each block below is a distro release where CVE-2021-3472 has a known fix. Run the listed command on that distro to remediate.
Debian bookworm
Source: Debian Security Tracker
xorg-server→ fixed in2:1.20.11-1urgency: not yet assignedsudo apt-get install --only-upgrade -y xorg-server
Debian trixie
Source: Debian Security Tracker
xorg-server→ fixed in2:1.20.11-1urgency: not yet assignedsudo apt-get install --only-upgrade -y xorg-server
Alpine v3.20
Source: Alpine secdb
xorg-server→ fixed in1.20.10-r5apk update && apk add --upgrade xorg-server
xwayland→ fixed in21.1.0-r4apk update && apk add --upgrade xwayland
Alpine v3.21
Source: Alpine secdb
xorg-server→ fixed in1.20.10-r5apk update && apk add --upgrade xorg-server
xwayland→ fixed in21.1.0-r4apk update && apk add --upgrade xwayland
Alpine edge
Source: Alpine secdb
xorg-server→ fixed in1.20.10-r5apk update && apk add --upgrade xorg-server
xwayland→ fixed in21.1.0-r4apk update && apk add --upgrade xwayland
Alpine v3.18
Source: Alpine secdb
xorg-server→ fixed in1.20.10-r5apk update && apk add --upgrade xorg-server
xwayland→ fixed in21.1.0-r4apk update && apk add --upgrade xwayland
Alpine v3.19
Source: Alpine secdb
xorg-server→ fixed in1.20.10-r5apk update && apk add --upgrade xorg-server
xwayland→ fixed in21.1.0-r4apk update && apk add --upgrade xwayland
Are YOU affected by CVE-2021-3472?
5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.
curl https://mindsparkstack.com/scan.sh | bash
Continuous monitoring beats manual checking
CVE-2021-3472dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.
See StackPatch ($99 lifetime)