CVE-2019-20795: Use After Free
First published: Sat May 09 2020(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/iproute2 | 5.10.0-4 6.1.0-3 6.10.0-2 | |
| Iproute2 | <5.1.0 | |
| Ubuntu Linux | =18.04 | |
| Ubuntu | =18.04 |
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Reference Links
- 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://launchpad.net/bugs/cve/CVE-2019-20795
- https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/commit/?id=86bf43c7c2fdc33d7c021b4a1add1c8facbca51c
- https://security-tracker.debian.org/tracker/CVE-2019-20795
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20795
- https://nvd.nist.gov/vuln/detail/CVE-2019-20795
- https://ubuntu.com/security/CVE-2019-20795
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