CVE-2019-7308: Canonical Ubuntu Linux

Medium severity, CVSS 5.6. EPSS: 0.5% chance of exploitation in the next 30 days.

kernel/bpf/verifier.c in the Linux kernel before 4.20.6 performs undesirable out-of-bounds speculation on pointer arithmetic in various cases, including cases of different branches with different state or limits to sanitize, leading to side-channel attacks.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 18.10 only
• Linux Linux Kernel: before 4.19.19 (fixed in 4.19.19); from 4.20.0, before 4.20.6 (fixed in 4.20.6)
• Opensuse Leap: version 15.0 only

Published 2019-02-01. Last modified 2026-06-17.