CVE-2016-7568: Debian Linux

Critical severity, CVSS 9.8. EPSS: 5.1% chance of exploitation in the next 30 days.

Integer overflow in the gdImageWebpCtx function in gd_webp.c in the GD Graphics Library (aka libgd) through 2.2.3, as used in PHP through 7.0.11, allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via crafted imagewebp and imagedestroy calls.

Affected products

• Debian Debian Linux: version 8.0 only
• Libgd Libgd: up to and including 2.2.3
• PHP PHP: from 5.6.0, up to and including 5.6.26; from 7.0.0, up to and including 7.0.11

Published 2016-09-28. Last modified 2026-06-17.