Description
A flaw was found in FFmpeg. A remote attacker could exploit this vulnerability by providing a specially crafted MPEG-PS/VOB media file containing a malicious DVD subtitle stream. This vulnerability is caused by a signed integer overflow in the DVD subtitle parser's fragment reassembly bounds checks, leading to a heap out-of-bounds write. Successful exploitation can result in a denial of service (DoS) due to an application crash, and potentially lead to arbitrary code execution.
Problem types
Integer Overflow or Wraparound
Product status
Timeline
| 2026-04-15: | Reported to Red Hat. |
| 2026-04-15: | Made public. |
Credits
Red Hat would like to thank Quang Luong (Calif.io in collaboration with OpenAI Codex) for reporting this issue.
References
access.redhat.com/security/cve/CVE-2026-6385
bugzilla.redhat.com/show_bug.cgi?id=2458764 (RHBZ#2458764)