CVE catalog

CVE-2016-6252

shadow: CVE-2016-6252

Severity: High · CVSS 7.8CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: Jul 19, 2016, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.41% · Oct 25, 2026

Integer overflow in shadow 4.2.1 allows local users to gain privileges via crafted input to newuidmap.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	shadow	sid	`1:4.20.3-1`	fixed
Debian	shadow	forky	`1:4.20.3-1`	fixed
Debian	shadow	trixie	`1:4.17.4-2`	fixed
Debian	shadow	bookworm	`1:4.13+dfsg1-1+deb12u2`	fixed
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu6`	vulnerable
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu7`	vulnerable
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu8`	vulnerable
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu9`	vulnerable
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu9.1`	vulnerable
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu9.2`	vulnerable
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu9.4`	fixed
Ubuntu	shadow	16.04	`1:4.1.5.1-1.1ubuntu7`	vulnerable
Ubuntu	shadow	16.04	`1:4.2-3.1ubuntu1`	vulnerable
Ubuntu	shadow	16.04	`1:4.2-3.1ubuntu2`	vulnerable
Ubuntu	shadow	16.04	`1:4.2-3.1ubuntu3`	vulnerable
Ubuntu	shadow	16.04	`1:4.2-3.1ubuntu4`	vulnerable
Ubuntu	shadow	16.04	`1:4.2-3.1ubuntu5`	vulnerable
Ubuntu	shadow	16.04	`1:4.2-3.1ubuntu5.2`	fixed
Suse	shadow	linux enterprise server for sap applications 12 sp1	`4.1.5.1-19.8.1`	fixed
Suse	shadow	linux enterprise server 12-ltss	`4.1.5.1-19.8.1`	fixed
Suse	shadow	linux enterprise server 12 sp1-ltss	`4.1.5.1-19.8.1`	fixed
Suse	shadow	linux enterprise server 12 sp2-bcl	`4.2.1-27.9.1`	fixed
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu6`	vulnerable
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu7`	vulnerable
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu8`	vulnerable
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu9`	vulnerable
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu9.1`	vulnerable
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu9.2`	vulnerable
Ubuntu	shadow	14.04	`1:4.1.5.1-1ubuntu9.4`	fixed
Ubuntu	shadow	16.04	`1:4.1.5.1-1.1ubuntu7`	vulnerable
Ubuntu	shadow	16.04	`1:4.2-3.1ubuntu1`	vulnerable
Ubuntu	shadow	16.04	`1:4.2-3.1ubuntu2`	vulnerable
Ubuntu	shadow	16.04	`1:4.2-3.1ubuntu3`	vulnerable
Ubuntu	shadow	16.04	`1:4.2-3.1ubuntu4`	vulnerable
Ubuntu	shadow	16.04	`1:4.2-3.1ubuntu5`	vulnerable
Ubuntu	shadow	16.04	`1:4.2-3.1ubuntu5.2`	fixed
Suse	shadow	openstack cloud 7	`4.2.1-27.9.1`	fixed
Suse	shadow	linux enterprise desktop 12 sp3	`4.2.1-27.9.1`	fixed
Suse	shadow	linux enterprise server for sap applications 12 sp2	`4.2.1-27.9.1`	fixed
Suse	shadow	linux enterprise server 12 sp2-ltss	`4.2.1-27.9.1`	fixed
Suse	shadow	linux enterprise server 12 sp3	`4.2.1-27.9.1`	fixed
Suse	shadow	linux enterprise server for sap applications 12 sp3	`4.2.1-27.9.1`	fixed
Suse	shadow	enterprise storage 4	`4.2.1-27.9.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	shadow	source	sid	`1:4.4-1`	not yet assigned	Not reported	[832170]
Debian	shadow	source	forky	`1:4.4-1`	not yet assigned	Not reported	[832170]
Debian	shadow	source	trixie	`1:4.4-1`	not yet assigned	Not reported	[832170]
Debian	shadow	source	bookworm	`1:4.4-1`	not yet assigned	Not reported	[832170]
Ubuntu	shadow	deb	14.04	`1:4.1.5.1-1ubuntu9.4`	Not reported	USN-3276-1	Not reported
Ubuntu	shadow	deb	16.04	`1:4.2-3.1ubuntu5.2`	Not reported	USN-3276-1	Not reported
Suse	shadow	rpm	linux enterprise server for sap applications 12 sp1	`4.1.5.1-19.8.1`	Not reported	SUSE-SU-2018:1995-1	Not reported
Suse	shadow	rpm	linux enterprise server 12-ltss	`4.1.5.1-19.8.1`	Not reported	SUSE-SU-2018:1995-1	Not reported
Suse	shadow	rpm	linux enterprise server 12 sp1-ltss	`4.1.5.1-19.8.1`	Not reported	SUSE-SU-2018:1995-1	Not reported
Suse	shadow	rpm	linux enterprise server 12 sp2-bcl	`4.2.1-27.9.1`	Not reported	SUSE-SU-2018:1997-2	Not reported
Ubuntu	shadow	deb	14.04	`1:4.1.5.1-1ubuntu9.4`	Not reported	UBUNTU-CVE-2016-6252	Not reported
Ubuntu	shadow	deb	16.04	`1:4.2-3.1ubuntu5.2`	Not reported	UBUNTU-CVE-2016-6252	Not reported
Suse	shadow	rpm	openstack cloud 7	`4.2.1-27.9.1`	Not reported	SUSE-SU-2018:1997-1	Not reported
Suse	shadow	rpm	linux enterprise desktop 12 sp3	`4.2.1-27.9.1`	Not reported	SUSE-SU-2018:1997-1	Not reported
Suse	shadow	rpm	linux enterprise server for sap applications 12 sp2	`4.2.1-27.9.1`	Not reported	SUSE-SU-2018:1997-1	Not reported
Suse	shadow	rpm	linux enterprise server 12 sp2-ltss	`4.2.1-27.9.1`	Not reported	SUSE-SU-2018:1997-1	Not reported
Suse	shadow	rpm	linux enterprise server 12 sp3	`4.2.1-27.9.1`	Not reported	SUSE-SU-2018:1997-1	Not reported
Suse	shadow	rpm	linux enterprise server for sap applications 12 sp3	`4.2.1-27.9.1`	Not reported	SUSE-SU-2018:1997-1	Not reported
Suse	shadow	rpm	enterprise storage 4	`4.2.1-27.9.1`	Not reported	SUSE-SU-2018:1997-1	Not reported

[Debian bug #832170]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libsubid4]Fixed
Source package: [shadow]
Details (2)
- 1:4.13+dfsg1-1+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
- 1:4.13+dfsg1-1+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
[libsubid-dev]Fixed
Source package: [shadow]
Details (2)
- 1:4.13+dfsg1-1+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
- 1:4.13+dfsg1-1+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
[login]Fixed
Source package: [shadow]
Details (2)
- 1:4.13+dfsg1-1+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
- 1:4.13+dfsg1-1+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
[passwd]Fixed
Source package: [shadow]
Details (2)
- 1:4.13+dfsg1-1+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
- 1:4.13+dfsg1-1+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
[uidmap]Fixed
Source package: [shadow]
Details (2)
- 1:4.13+dfsg1-1+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12
- 1:4.13+dfsg1-1+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · bookworm; dsa · shadow · debian · 12

[Debian 13 (Trixie)]

[libsubid5]Fixed
Source package: [shadow]
Details (2)
- 1:4.17.4-2 · amd64 · trixie
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · 13
- 1:4.17.4-2 · arm64 · trixie
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · 13
[libsubid-dev]Fixed
Source package: [shadow]
Details (2)
- 1:4.17.4-2 · amd64 · trixie
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · 13
- 1:4.17.4-2 · arm64 · trixie
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · 13
[login.defs]Fixed
Source package: [shadow]
Details (2)
- 1:4.17.4-2 · all · trixie
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · 13
- 1:4.17.4-2 · all · trixie
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · 13
[passwd]Fixed
Source package: [shadow]
Details (2)
- 1:4.17.4-2 · amd64 · trixie
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · 13
- 1:4.17.4-2 · arm64 · trixie
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · 13
[uidmap]Fixed
Source package: [shadow]
Details (2)
- 1:4.17.4-2 · amd64 · trixie
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · 13
- 1:4.17.4-2 · arm64 · trixie
  Fixed · Fixed: 1:4.4-1
  dsa · shadow · debian · 13

Observed: Oct 23, 2026, 5:22:34 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]