CVE-2015-6761: ffmpeg Race Condition

Vulnerability summary

CVE-2015-6761 is a medium (CVSS 6.8) Race Condition vulnerability in ffmpeg. EPSS estimates a 1.05% chance of exploitation in the next 30 days, higher than 63.6% of scored vulnerabilities.

Timeline

1. 15-10-2015
   PublishedVulnerability first disclosed.
2. 06-08-2024
   Last modifiedVulnerability information updated.

Description

The update_dimensions function in libavcodec/vp8.c in FFmpeg through 2.8.1, as used in Google Chrome before 46.0.2490.71 and other products, relies on a coefficient-partition count during multi-threaded operation, which allows remote attackers to cause a denial of service (race condition and memory corruption) or possibly have unspecified other impact via a crafted WebM file.

• CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.