A libvpx security update has been released for Debian GNU/Linux 9 and 10

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Debian Security Advisory DSA-4578-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
November 28, 2019 https://www.debian.org/security/faq
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Package : libvpx
CVE ID : CVE-2019-9232 CVE-2019-9325 CVE-2019-9433 CVE-2019-9371

Multiple security issues were found in libvpx multimedia library which
could result in denial of service and potentially the execution of
arbitrary code if malformed WebM files are processed.

For the oldstable distribution (stretch), these problems have been fixed
in version 1.6.1-3+deb9u2.

For the stable distribution (buster), these problems have been fixed in
version 1.7.0-3+deb10u1.

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 Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/