Fixed
Created: Jun 16, 2022
Updated: Nov 2, 2022
Resolved Date: Jul 3, 2022
Found In Version: 10.18.44.1
Fix Version: 10.18.44.27
Severity: Standard
Applicable for: Wind River Linux LTS 18
Component/s: Userspace
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.
https://nvd.nist.gov/vuln/detail/CVE-2022-1924
