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CVE-2019-20795

18
FAUCET Score

CVE-2019-20795 describes a use-after-free vulnerability in iproute2 versions prior to 5.1.0, specifically within the get_netnsid_from_name function in ip/ipnetns.c, affecting products like Canonical Ubuntu Linux and iproute2. This vulnerability carries a CVSS score of 4.4 (Medium), indicating a local attack vector with low complexity, requiring high privileges, and potentially leading to a denial of service. While the security relevance may be limited to specific setuid configurations, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.1.0CPE matchmatch criteria
cpe:2.3:a:iproute2_project:iproute2:*:*:*:*:*:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.4MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
0.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 82nd percentile among its peer group of 3,720 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: iproute

Vendor Advisories (1)

redhatCVE-2019-20795Low

iproute: use-after-free in get_netnsid_from_name in ip/ipnetns.c

May 5, 2019

References

bugzilla.suse.com / show_bug.cgi
Issue TrackingThird Party Advisory
git.kernel.org / pub/scm/network/iproute2/iproute2.git/commit
PatchThird Party Advisory
security.gentoo.org / glsa/202008-06
Third Party Advisory
usn.ubuntu.com / 4357-1
Third Party Advisory