CVE-2019-20795
MEDIUMiproute2 < 5.1.0 - Use-After-Free in get_netnsid_from_name
Title source: llmDescription
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.
References (4)
Core 4
Core References
Patch, Third Party Advisory x_refsource_confirm
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/commit/?id=9bf2c538a0eb10d66e2365a655bf6c52f5ba3d10
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.suse.com/show_bug.cgi?id=1171452
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4357-1/
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202008-06
Scores
CVSS v3
4.4
EPSS
0.0003
EPSS Percentile
8.9%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-416
Status
published
Products (2)
canonical/ubuntu_linux
18.04
iproute2_project/iproute2
< 5.1.0
Published
May 09, 2020
Tracked Since
Feb 18, 2026