CVE-2026-6385
Signed Integer Overflow in FFmpeg DVD Subtitle Parser Causes DoS
Publication date: 2026-04-15
Last updated on: 2026-04-15
Assigner: Red Hat, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| ffmpeg | ffmpeg | * |
| ffmpeg | ffmpeg | From 2026-04-15 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-190 | The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-6385 is a vulnerability in FFmpeg's DVD subtitle parser caused by a signed integer overflow during fragment reassembly bounds checks.
An attacker can exploit this by supplying a specially crafted MPEG-PS/VOB media file containing a malicious DVD subtitle stream.
This overflow leads to a heap out-of-bounds write, which can cause the application to crash (denial of service) and potentially allow arbitrary code execution.
How can this vulnerability impact me? :
Successful exploitation of this vulnerability can result in a denial of service due to an application crash.
More seriously, it may allow an attacker to execute arbitrary code on the affected system.
This can compromise the security and stability of systems running vulnerable versions of FFmpeg, especially on Linux.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should update FFmpeg to a version that has patched the signed integer overflow in the DVD subtitle parser.
Avoid processing untrusted or specially crafted MPEG-PS/VOB media files containing DVD subtitle streams until the update is applied.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.