Debian Security Advisory
DLA-2666-1 libx11 -- LTS security update
- Date Reported:
- 24 May 2021
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 988737.
In Mitre's CVE dictionary: CVE-2021-31535.
- More information:
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/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