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Vulnerability record · CVE-2016-9401 · published 23 January 2017

CVE-2016-9401: Gnu bash use after free vulnerability

Gnu · Bash

popd in bash might allow local users to bypass the restricted shell and cause a use-after-free via a crafted address.

5.5 CVSS 3.1 Medium EPSS 0.43% · top 65.7% CWE-416 · Use after free
5.5CVSS 3.1 base score, v2 2.1
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
8Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

Description

popd in bash might allow local users to bypass the restricted shell and cause a use-after-free via a crafted address.

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

Affected products

8 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://rhn.redhat.com/errata/RHSA-2017-0725.html Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/11/17/5 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/11/17/9 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/94398 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2017:1931 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00028.html Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/201701-02 Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0725.html Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/11/17/5 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/11/17/9 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/94398 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2017:1931 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00028.html Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/201701-02 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2016-9401), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.