CVE-2015-7511: Canonical Ubuntu Linux

Low severity, CVSS 2.0. EPSS: 0.4% chance of exploitation in the next 30 days.

Libgcrypt before 1.6.5 does not properly perform elliptic-point curve multiplication during decryption, which makes it easier for physically proximate attackers to extract ECDH keys by measuring electromagnetic emanations.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 15.10 only
• Debian Debian Linux: version 7.0 only; version 8.0 only
• Gnupg Libgcrypt: up to and including 1.6.4

Published 2016-04-19. Last modified 2026-06-17.