CVE-2026-6385 Integer overflow in Lightspeed Core
Remote attackers can cause denial of service or execute arbitrary code via a crafted media file exploiting an integer overflow in FFmpeg's DVD subtitle parser.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-6385?
CVE-2026-6385 is a medium-severity vulnerability in Red Hat Lightspeed Core, published on 15 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-190
Which versions are affected by CVE-2026-6385?
How do I fix CVE-2026-6385?
Apply the vendor's patch.
Is CVE-2026-6385 being exploited?
There is no known exploitation of CVE-2026-6385 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-6385, ECHO-5b52-e7e7-a6c7, GHSA-q22x-99q7-fr6w, UBUNTU-CVE-2026-6385.