CVE-2016-0728

Priority
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.
Ubuntu-Description
Yevgeny Pats discovered that the session keyring implementation in the
Linux kernel did not properly reference count when joining an existing
session keyring. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code with
administrative privileges.
Notes
 jdstrand> android kernels (flo, goldfish, grouper, maguro, mako and manta) are
  not supported on the Ubuntu Touch 14.10 and earlier preview kernels
 jdstrand> linux-lts-saucy no longer receives official support
 jdstrand> linux-lts-quantal no longer receives official support
Package
Source: linux (LP Ubuntu Debian)
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):released (3.13.0-76.120)
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.3.0-7.18)
Patches:
Introduced by 3a50597de8635cd05133bd12c95681c82fe7b878Fixed by 23567fd052a9abb6d67fe8e7a9ccdd9800a540f2
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):not-affected (4.4.0-1002.2)
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1001.10)
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1003.3)
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.8.0-36.36~16.04.1)
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.8.0-36.36~16.04.1)
Package
linux-krillin:not-affected
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Patches:
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):released (3.16.0-59.79~14.04.1)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):released (3.19.0-47.53~14.04.1)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):released (4.2.0-25.30~14.04.1)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):not-affected (4.4.0-13.29~14.04.1)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1003.4)
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1012.12)
Package
Upstream:released (4.5~rc1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Package
linux-vegetahd:not-affected
More Information

Updated: 2018-10-31 21:22:01 UTC (commit cfa7cf69d76449ccff972ac22f40976a08d908c2)