CVE catalog

CVE-2021-31523

xscreensaver: CVE-2021-31523

Severity: Medium
Published: Apr 21, 2021, 7:15:35 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.32% · Oct 25, 2026

The Debian xscreensaver 5.42+dfsg1-1 package for XScreenSaver has cap_net_raw enabled for the /usr/libexec/xscreensaver/sonar file, which allows local users to gain privileges because this is arguably incompatible with the design of the Mesa 3D Graphics library dependency.

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	xscreensaver	sid	`6.09+dfsg1-2`	fixed
Debian	xscreensaver	forky	`6.09+dfsg1-2`	fixed
Debian	xscreensaver	trixie	`6.09+dfsg1-1`	fixed
Debian	xscreensaver	bookworm	`6.06+dfsg1-3+deb12u1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	xscreensaver	source	sid	`5.45+dfsg1-2`	not yet assigned	Not reported	[987149]
Debian	xscreensaver	source	forky	`5.45+dfsg1-2`	not yet assigned	Not reported	[987149]
Debian	xscreensaver	source	trixie	`5.45+dfsg1-2`	not yet assigned	Not reported	[987149]
Debian	xscreensaver	source	bookworm	`5.45+dfsg1-2`	not yet assigned	Not reported	[987149]

[Debian bug #987149]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[xscreensaver]Fixed
Details (4)
- 6.06+dfsg1-3+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.06+dfsg1-3+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
[xscreensaver-data]Fixed
Source package: [xscreensaver]
Details (4)
- 6.06+dfsg1-3+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.06+dfsg1-3+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
[xscreensaver-data-extra]Fixed
Source package: [xscreensaver]
Details (4)
- 6.06+dfsg1-3+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.06+dfsg1-3+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
[xscreensaver-gl]Fixed
Source package: [xscreensaver]
Details (4)
- 6.06+dfsg1-3+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.06+dfsg1-3+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
[xscreensaver-gl-extra]Fixed
Source package: [xscreensaver]
Details (4)
- 6.06+dfsg1-3+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.06+dfsg1-3+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
[xscreensaver-screensaver-bsod]Fixed
Source package: [xscreensaver]
Details (4)
- 6.06+dfsg1-3+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.06+dfsg1-3+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
[xscreensaver-screensaver-webcollage]Fixed
Source package: [xscreensaver]
Details (4)
- 6.06+dfsg1-3+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.06+dfsg1-3+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12
- 6.08+dfsg1-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · bookworm; dsa · xscreensaver · debian · 12

[Debian 13 (Trixie)]

[xscreensaver]Fixed
Details (2)
- 6.09+dfsg1-1 · amd64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13
- 6.09+dfsg1-1 · arm64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13
[xscreensaver-data]Fixed
Source package: [xscreensaver]
Details (2)
- 6.09+dfsg1-1 · amd64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13
- 6.09+dfsg1-1 · arm64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13
[xscreensaver-data-extra]Fixed
Source package: [xscreensaver]
Details (2)
- 6.09+dfsg1-1 · amd64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13
- 6.09+dfsg1-1 · arm64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13
[xscreensaver-gl]Fixed
Source package: [xscreensaver]
Details (2)
- 6.09+dfsg1-1 · amd64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13
- 6.09+dfsg1-1 · arm64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13
[xscreensaver-gl-extra]Fixed
Source package: [xscreensaver]
Details (2)
- 6.09+dfsg1-1 · amd64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13
- 6.09+dfsg1-1 · arm64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13
[xscreensaver-screensaver-bsod]Fixed
Source package: [xscreensaver]
Details (2)
- 6.09+dfsg1-1 · amd64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13
- 6.09+dfsg1-1 · arm64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13
[xscreensaver-screensaver-webcollage]Fixed
Source package: [xscreensaver]
Details (2)
- 6.09+dfsg1-1 · amd64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13
- 6.09+dfsg1-1 · arm64 · trixie
  Fixed · Fixed: 5.45+dfsg1-2
  dsa · xscreensaver · debian · 13

Observed: Oct 23, 2026, 5:56:52 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]