CVE-2016-9401: debian debian_linux Use After Free
CVSS: 6.2v3.1MediumModified
AliasesALPINE-CVE-2016-9401MGASA-2017-0005SUSE-SU-2017:1317-1SUSE-SU-2017:1337-1UBUNTU-CVE-2016-9401DEBIAN-CVE-2016-9401
Published 23-01-2017Last modified 06-08-2025
Vulnerability summary
CVE-2016-9401 is a medium (CVSS 6.2) Use After Free vulnerability in debian debian_linux. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 34.9% of scored vulnerabilities.
CVSS score
6.2/10
010
Medium · v3.1 (CVE.org)EPSS score
0.42%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 5 · Related 2Timeline
- 23-01-2017PublishedVulnerability first disclosed.
- 06-08-2025Last modifiedVulnerability information updated.
Description
popd in bash might allow local users to bypass the restricted shell and cause a use-after-free via a crafted address.
CVSS metrics
7 scores · 5 sources · 3 versionsMedium 6.2Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSources5 sources · 5.5–6.2
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- OSV · AlpineEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated6.2MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
Medium 5.5Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NSourcesSingle source
Low 2.1Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
0.42%
Chance of exploitation in the next 30 days
Percentile
35%
Versus all other CVEs
30-day change
0.00 pp
From 0.43% on 18-09-2026
18-09-202618-10-2026
EPSS score0.42%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Suse9 products
- bash&distro=SUSE Linux Enterprise Desktop 12 SP2< 4.3-82.1
- bash&distro=SUSE Linux Enterprise Server 11 SP4< 3.2-147.35.1
- bash&distro=SUSE Linux Enterprise Server 12 SP2< 4.3-82.1
- bash&distro=SUSE Linux Enterprise Server for Raspberry Pi 12 SP2< 4.3-82.1
- bash&distro=SUSE Linux Enterprise Server for SAP Applications 11 SP4< 3.2-147.35.1
Redhat6 products
- enterprise_linux_desktop6.0 | 7.0
- enterprise_linux_server6.0 | 7.0
- enterprise_linux_server_aus7.4 | 7.6 | 7.7
- enterprise_linux_server_eus7.4 | 7.5 | 7.6 | 7.7
- enterprise_linux_server_tus7.6 | 7.7
Debian2 products
- bash< 4.4-3
- debian_linuxEOL8.0
Alpine1 product
- bash< 4.3.33-r2 | < 4.3.42-r5 | < 4.3.46-r5
Gnu1 product
- bash< 4.4 | 4.4:patch1 | 4.4:patch2 | 4.4:patch3 | 4.4:patch4 | 4.4:patch5
Mageia1 product
- bash< 4.3-48.2.1.mga5
Ubuntu1 product
- bash< 4.3-7ubuntu1.7 | < 4.3-14ubuntu1.2 | < 4.4-5ubuntu1
7 vendors · 21 products
References
22 links- www.openwall.com/lists/oss-security/2016/11/17/5Mailing ListX Refsource MLISTThird Party AdvisoryREPORT
lists.debian.org/debian-lts-announce/2019/03/msg00028.htmlMailing ListX Refsource MLISTThird Party Advisory
Show all 22 references
- bugzilla.suse.com/976776REPORT