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.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2022-07-19T19:13:35

Updated: 2024-08-03T00:17:00.985Z

Reserved: 2022-05-27T00:00:00

Link: CVE-2022-1924

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-07-19T20:15:11.027

Modified: 2024-11-21T06:41:45.733

Link: CVE-2022-1924

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-05-18T00:00:00Z

Links: CVE-2022-1924 - Bugzilla