CVE-2016-0728
Published: 19 January 2016
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.
From the Ubuntu Security Team
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
| Author | Note |
|---|---|
| jdstrand | android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
|
| trusty |
Released
(3.13.0-76.120)
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Released
(3.19.0-47.53)
|
|
| wily |
Released
(4.2.0-25.30)
|
|
| xenial |
Not vulnerable
(4.3.0-7.18)
|
|
| yakkety |
Not vulnerable
(4.4.0-21.37)
|
|
|
Patches: Introduced by 3a50597de8635cd05133bd12c95681c82fe7b878 |
||
|
linux-armadaxp Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-aws Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Not vulnerable
(4.4.0-1002.2)
|
|
| upstream |
Released
(4.5~rc1)
|
|
| xenial |
Not vulnerable
(4.4.0-1001.10)
|
|
| yakkety |
Does not exist
|
|
|
linux-flo Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Not vulnerable
|
|
| wily |
Not vulnerable
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
|
|
|
linux-fsl-imx51 Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| xenial |
Not vulnerable
(4.4.0-1003.3)
|
|
| yakkety |
Does not exist
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Not vulnerable
|
|
| wily |
Not vulnerable
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
| yakkety |
Does not exist
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
| yakkety |
Does not exist
|
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-raring Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
precise |
Released
(3.13.0-76.120~precise1)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Released
(3.16.0-59.79~14.04.1)
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Released
(3.19.0-47.53~14.04.1)
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Released
(4.2.0-25.30~14.04.1)
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Not vulnerable
(4.4.0-13.29~14.04.1)
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Not vulnerable
|
|
| wily |
Not vulnerable
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Not vulnerable
|
|
| wily |
Not vulnerable
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Released
(4.2.0-1020.27)
|
|
| xenial |
Not vulnerable
(4.4.0-1003.4)
|
|
| yakkety |
Not vulnerable
(4.4.0-1009.10)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Not vulnerable
(4.4.0-1012.12)
|
|
| yakkety |
Not vulnerable
(4.4.0-1012.12)
|
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc1)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0728
- http://perception-point.io/2016/01/14/analysis-and-exploitation-of-a-linux-kernel-vulnerability-cve-2016-0728/
- https://ubuntu.com/security/notices/USN-2872-1
- https://ubuntu.com/security/notices/USN-2872-2
- https://ubuntu.com/security/notices/USN-2872-3
- https://ubuntu.com/security/notices/USN-2871-2
- https://ubuntu.com/security/notices/USN-2871-1
- https://ubuntu.com/security/notices/USN-2873-1
- https://ubuntu.com/security/notices/USN-2870-1
- https://ubuntu.com/security/notices/USN-2870-2
- NVD
- Launchpad
- Debian