Description

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.

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/

Details

Risk Information

CVSS v2

CVSS v3