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CVE-2022-1923

Published: 19 July 2022

DOS / potential heap overwrite in mkv demuxing using bzip decompression. Integer overflow in matroskademux element in bzip decompression function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, and the underlying OS capabilities, it could be just a segfault or a heap overwrite. If the libc uses mmap for large chunks, and the OS supports mmap, then it is just a segfault (because the realloc before the integer overflow will use mremap to reduce the size of the chunk, and it will start to write to unmapped memory). However, if using a libc implementation that does not use mmap, or if the OS does not support mmap while using libc, then this could result in a heap overwrite.

Priority

Medium

CVSS 3 base score: 7.8

Status

Package Release Status
gst-plugins-good1.0
Launchpad, Ubuntu, Debian
bionic
Released (1.14.5-0ubuntu1~18.04.3)
focal
Released (1.16.3-0ubuntu1.1)
impish Ignored
(reached end-of-life)
jammy
Released (1.20.3-0ubuntu1)
trusty Ignored
(out of standard support)
upstream Needs triage

xenial
Released (1.8.3-1ubuntu0.5+esm1)
Patches:
upstream: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/14d306da6da51a762c4dc701d161bb52ab66d774 (not CVE assigned but related)
upstream: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/ad6012159acf18c6b5c0f4edf037e8c9a2dbc966