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A ffmpeg security update has been released for Debian GNU/Linux 9 LTS to address two vulnerabilities.

DLA 2537-1: ffmpeg security update

Debian LTS Advisory DLA-2537-1 Roberto C. Sánchez
January 31, 2021

Package : ffmpeg
Version : 7:3.2.15-0+deb9u2
CVE ID : CVE-2019-17539 CVE-2020-35965
Debian Bug : 979999

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


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


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

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: