CVE ID:	CVE-2022-1924
Description:	DOS / potential heap overwrite in mkv demuxing using lzo decompression. Integer overflow in matroskademux element in lzo 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.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2022-1924 Debian Security Information: DSA-5204 (Google Search) https://www.debian.org/security/2022/dsa-5204 https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1225 https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1225 https://lists.debian.org/debian-lts-announce/2022/08/msg00001.html