-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

- -------------------------------------------------------------------------
Debian Security Advisory DSA-5027-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
December 21, 2021                     https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : xorg-server
CVE ID         : CVE-2021-4008 CVE-2021-4009 CVE-2021-4010 CVE-2021-4011

Jan-Niklas Sohn discovered that multiple input validation failures in X
server extensions of the X.org X server may result in privilege
escalation if the X server is running privileged.

For the oldstable distribution (buster), these problems have been fixed
in version 2:1.20.4-1+deb10u4.

For the stable distribution (bullseye), these problems have been fixed in
version 2:1.20.11-1+deb11u1.

We recommend that you upgrade your xorg-server packages.

For the detailed security status of xorg-server please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/xorg-server

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
-----BEGIN PGP SIGNATURE-----
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=M+0O
-----END PGP SIGNATURE-----