A libvpx security update has been released for Debian GNU/Linux 9 LTS.

DLA 2829-1: libvpx security update

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Debian LTS Advisory DLA-2829-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Adrian Bunk
November 27, 2021   https://wiki.debian.org/LTS
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Package : libvpx
Version : 1.6.1-3+deb9u3
CVE ID : CVE-2020-0034

An out-of-bounds buffer read on truncated key frames in vp8_decode_frame
has been fixed in libvpx, a popular library for the VP8 and VP9 video codecs.

For Debian 9 stretch, this problem has been fixed in version
1.6.1-3+deb9u3.

We recommend that you upgrade your libvpx packages.

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

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