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. References: https://gstreamer.freedesktop.org/security/sa-2022-0002.html https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1225
Created gstreamer1-plugins-good tracking bugs for this issue: Affects: fedora-all [bug 2130960] Created mingw-gstreamer1-plugins-good tracking bugs for this issue: Affects: fedora-all [bug 2130961]
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2023:2260 https://access.redhat.com/errata/RHSA-2023:2260
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2022-1923