Debian Security Advisory

DLA-2537-1 ffmpeg -- LTS security update

Date Reported:
31 Jan 2021
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 979999.
In Mitre's CVE dictionary: CVE-2019-17539, CVE-2020-35965.
More information:

Two vulnerabilities have been discovered in ffmpeg, a widely used multimedia framework.

  • CVE-2019-17539

    a NULL pointer dereference and possibly unspecified other impact when there is no valid close function pointer

  • CVE-2020-35965

    an out-of-bounds write because of errors in calculations of when to perform memset zero operations

For Debian 9 stretch, these problems have been fixed in version 7:3.2.15-0+deb9u2.

We recommend that you upgrade your ffmpeg packages.

For the detailed security status of ffmpeg 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: