UBUNTU-CVE-2022-1924

Dashboard / Vulnerabilities / UBUNTU-CVE-2022-1924

UBUNTU-CVE-2022-1924

Summary:

Details: 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.

References: https://ubuntu.com/security/CVE-2022-1924, https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1225, https://ubuntu.com/security/notices/USN-5555-1, https://www.cve.org/CVERecord?id=CVE-2022-1924