Debian LTS DLA-4516-1 gst-plugins-ugly1.0 Critical Buffer Overflow Risk 2026-2920

CVE-2026-2920

The ASF demuxer did not validate the number of streams against
the size of its static streams array. A crafted ASF file with
more than 32 streams could cause a heap-based buffer overflow
and potentially allow code execution.

CVE-2026-2922

The RealMedia demuxer checked for too many video fragments after
writing to the fragment storage, allowing an out-of-bounds write.
Additionally, an integer overflow in the fragment size check could
bypass the available data validation.

For Debian 11 bullseye, these problems have been fixed in version
1.18.4-2+deb11u2.

We recommend that you upgrade your gst-plugins-ugly1.0 packages.

For the detailed security status of gst-plugins-ugly1.0 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/gst-plugins-ugly1.0

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