Debian Security Advisory

DLA-2612-1 leptonlib -- LTS security update

Date Reported:
31 Mar 2021
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2020-36277, CVE-2020-36278, CVE-2020-36279, CVE-2020-36281.
More information:

Several issues have been found by ClusterFuzz in leptonlib, an image processing library.

All issues are related to heap-based buffer over-read in several functions or a denial of service (application crash) with crafted data.

For Debian 9 stretch, these problems have been fixed in version 1.74.1-1+deb9u1.

We recommend that you upgrade your leptonlib packages.

For the detailed security status of leptonlib please refer to its security tracker page at:

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