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CVE-2016-0728

The join_session_keyring function in security/keys/process_keys.c in the Linux kernel before 4.4.1 mishandles object references in a certain error case, which allows local users to gain privileges or cause a denial of service (integer overflow and use-after-free) via crafted keyctl commands.

Published:Jan 19, 2016

Last Modified:Apr 12, 2025

EPS:Feb 8, 2016

EPSS Score:0.5601

CVSS Score:7.8

Affected Products

Vendor

Product

Action

Vendor

Canonical

Product

Ubuntu Linux

Canonical

Ubuntu Linux

Vendor

Debian

Product

Debian Linux

Debian

Debian Linux

Vendor

Google

Product

Android

Google

Android

Vendor

Hp

Product

Server Migration Pack

Hp

Server Migration Pack

Vendor

Linux

Product

Linux Kernel

Linux

Linux Kernel

Vendor

Redhat

Product

Enterprise Linux

Redhat

Enterprise Linux

Vendor

Redhat

Product

Enterprise Mrg

Redhat

Enterprise Mrg

Vendor

Redhat

Product

Rhel Eus

Redhat

Rhel Eus

Vendor

Redhat

Product

Rhel Extras Rt

Redhat

Rhel Extras Rt

Exploits

https://www.exploit-db.com/exploits/39277 https://github.com/bittorrent3389/cve-2016-0728 https://github.com/googleweb/CVE-2016-0728 https://github.com/hal0taso/CVE-2016-0728 https://github.com/idl3r/cve-2016-0728 https://github.com/kennetham/cve_2016_0728 https://github.com/nardholio/cve-2016-0728 https://github.com/neuschaefer/cve-2016-0728-testbed https://github.com/sibilleg/exploit_cve-2016-0728 https://github.com/sidrk01/cve-2016-0728 https://github.com/sugarvillela/CVE https://github.com/th30d00r/Linux-Vulnerability-CVE-2016-0728-and-Exploit https://github.com/tndud042713/cve https://www.exploit-db.com/exploits/40003

Common Weakness Enumeration

CWE-416 Use After Free

Common Attack Pattern Enumeration and Classification (CAPEC)

No CAPEC recorded yet

Related CVEs

CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…

CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…

CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …

CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…

CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…

CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…

CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…

CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…

CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…

CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=23567fd052a9abb6d67fe8e7a9ccdd9800a540f2

http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html

http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176194.html

http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00026.html

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00012.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00033.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00034.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00035.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00038.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00040.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00041.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00044.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00045.html

http://perception-point.io/2016/01/14/analysis-and-exploitation-of-a-linux-kernel-vulnerability-cve-2016-0728/

http://rhn.redhat.com/errata/RHSA-2016-0064.html

http://rhn.redhat.com/errata/RHSA-2016-0065.html

http://rhn.redhat.com/errata/RHSA-2016-0068.html

http://source.android.com/security/bulletin/2016-03-01.html

http://www.debian.org/security/2016/dsa-3448

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.1

http://www.openwall.com/lists/oss-security/2016/01/19/2

http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html

http://www.securityfocus.com/bid/81054

http://www.securitytracker.com/id/1034701

http://www.ubuntu.com/usn/USN-2870-1

http://www.ubuntu.com/usn/USN-2870-2

http://www.ubuntu.com/usn/USN-2871-1

http://www.ubuntu.com/usn/USN-2871-2

http://www.ubuntu.com/usn/USN-2872-1

http://www.ubuntu.com/usn/USN-2872-2

http://www.ubuntu.com/usn/USN-2872-3

http://www.ubuntu.com/usn/USN-2873-1

https://bto.bluecoat.com/security-advisory/sa112

https://bugzilla.redhat.com/show_bug.cgi?id=1297475

https://github.com/torvalds/linux/commit/23567fd052a9abb6d67fe8e7a9ccdd9800a540f2

https://h20565.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05018265

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05130958

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380

https://security.netapp.com/advisory/ntap-20160211-0001/

https://www.exploit-db.com/exploits/39277/

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=23567fd052a9abb6d67fe8e7a9ccdd9800a540f2

http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html

http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176194.html

http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00026.html

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00012.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00033.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00034.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00035.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00038.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00040.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00041.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00044.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00045.html

http://perception-point.io/2016/01/14/analysis-and-exploitation-of-a-linux-kernel-vulnerability-cve-2016-0728/

http://rhn.redhat.com/errata/RHSA-2016-0064.html

http://rhn.redhat.com/errata/RHSA-2016-0065.html

http://rhn.redhat.com/errata/RHSA-2016-0068.html

http://source.android.com/security/bulletin/2016-03-01.html

http://www.debian.org/security/2016/dsa-3448

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.1

http://www.openwall.com/lists/oss-security/2016/01/19/2

http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html

http://www.securityfocus.com/bid/81054

http://www.securitytracker.com/id/1034701

http://www.ubuntu.com/usn/USN-2870-1

http://www.ubuntu.com/usn/USN-2870-2

http://www.ubuntu.com/usn/USN-2871-1

http://www.ubuntu.com/usn/USN-2871-2

http://www.ubuntu.com/usn/USN-2872-1

http://www.ubuntu.com/usn/USN-2872-2

http://www.ubuntu.com/usn/USN-2872-3

http://www.ubuntu.com/usn/USN-2873-1

https://bto.bluecoat.com/security-advisory/sa112

https://bugzilla.redhat.com/show_bug.cgi?id=1297475

https://github.com/torvalds/linux/commit/23567fd052a9abb6d67fe8e7a9ccdd9800a540f2

https://h20565.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05018265

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05130958

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380

https://security.netapp.com/advisory/ntap-20160211-0001/

https://www.exploit-db.com/exploits/39277/

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High