CVE-2016-2191: Canonical Ubuntu Linux

Medium severity, CVSS 6.5. EPSS: 3.5% chance of exploitation in the next 30 days.

The bmp_read_rows function in pngxtern/pngxrbmp.c in OptiPNG before 0.7.6 allows remote attackers to cause a denial of service (invalid memory write and crash) via a series of delta escapes in a crafted BMP image.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 15.04 only
• Debian Debian Linux: version 7.0 only; version 8.0 only
• Opensuse Leap: version 42.1 only
• Opensuse Opensuse: version 13.2 only
• Optipng Optipng: version 0.7.2 only

Published 2016-04-13. Last modified 2026-06-17.