CVE-2019-20795

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.

CVSS 3.1

4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 34% of CVEs (scores of 2026-10-25)

CWE

CWE-416

Published

2020-05-09

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• canonical:ubuntu_linux
• iproute2_project:iproute2

References

• https://bugzilla.suse.com/show_bug.cgi?id=1171452
• https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/commit/?id=9bf2c538a0eb10d66e2365a655bf6c52f5ba3d10
• https://security.gentoo.org/glsa/202008-06
• https://usn.ubuntu.com/4357-1/
• https://bugzilla.suse.com/show_bug.cgi?id=1171452

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