CVE-2015-6820: Canonical Ubuntu Linux
High severity, CVSS 7.5. EPSS: 2.4% chance of exploitation in the next 30 days.
The ff_sbr_apply function in libavcodec/aacsbr.c in FFmpeg before 2.7.2 does not check for a matching AAC frame syntax element before proceeding with Spectral Band Replication calculations, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted AAC data.
Affected products
Published 2015-09-06. Last modified 2026-06-17.