CVE-2019-20795: Canonical Ubuntu Linux

Medium severity, CVSS 4.4. EPSS: 0.4% chance of exploitation in the next 30 days.

iproute2 before 5.1.0 has a use-after-free in get_netnsid_from_name in ip/ipnetns.c. NOTE: security relevance may be limited to certain uses of setuid that, although not a default, are sometimes a configuration option offered to end users. Even when setuid is used, other factors (such as C library configuration) may block exploitability.

Affected products

• Canonical Ubuntu Linux: version 18.04 only
• IPROUTE2 Project IPROUTE2: before 5.1.0 (fixed in 5.1.0)

Published 2020-05-09. Last modified 2026-06-17.