- -------------------------------------------------------------------------
Debian LTS Advisory DLA-2666-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/               Emilio Pozuelo Monfort
May 24, 2021                                  https://wiki.debian.org/LTS
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Package        : libx11
Version        : 2:1.6.4-3+deb9u4
CVE ID         : CVE-2021-31535
Debian Bug     : 988737

Roman Fiedler found that libX11, the X11 protocol client library, was
vulnerable to protocol command injection due to insufficient validation
of arguments to some functions.

For Debian 9 stretch, this problem has been fixed in version
2:1.6.4-3+deb9u4.

We recommend that you upgrade your libx11 packages.

For the detailed security status of libx11 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/libx11

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

Debian LTS: DLA-2666-1: libx11 security update

May 24, 2021
Roman Fiedler found that libX11, the X11 protocol client library, was vulnerable to protocol command injection due to insufficient validation of arguments to some functions

Summary

For Debian 9 stretch, this problem has been fixed in version
2:1.6.4-3+deb9u4.

We recommend that you upgrade your libx11 packages.

For the detailed security status of libx11 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/libx11

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


Severity
Package : libx11
Version : 2:1.6.4-3+deb9u4
CVE ID : CVE-2021-31535
Debian Bug : 988737

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