CVE-2026-6385
Received Received - Intake
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
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.
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Meta Information
Published
2026-04-15
Last Modified
2026-04-15
Generated
2026-06-16
AI Q&A
2026-04-16
EPSS Evaluated
2026-06-15
NVD
CVE-2026-6385
EUVD
EUVD-2026-23098
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
ffmpeg ffmpeg *
ffmpeg ffmpeg From 2026-04-15 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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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.
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Executive Summary

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.

Impact Analysis

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.

Mitigation Strategies

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.

Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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