CVE-2016-0723
Published: 7 February 2016
Race condition in the tty_ioctl function in drivers/tty/tty_io.c in the Linux kernel through 4.4.1 allows local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free and system crash) by making a TIOCGETD ioctl call during processing of a TIOCSETD ioctl call.
From the Ubuntu Security Team
It was discovered that a race condition existed in the ioctl handler for the TTY driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information.
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-armadaxp Launchpad, Ubuntu, Debian |
precise |
Released
(3.2.0-1665.90)
|
| trusty |
Does not exist
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
| 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~rc2)
|
|
| xenial |
Not vulnerable
(4.4.0-1001.10)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-flo Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.5~rc2)
|
|
| vivid |
Ignored
(end of life)
|
|
| wily |
Ignored
(end of life)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Does not exist
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
| xenial |
Not vulnerable
(4.4.0-1003.3)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| vivid |
Ignored
(end of life)
|
|
| wily |
Ignored
(end of life)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Ignored
(end of life)
|
|
| upstream |
Released
(4.5~rc2)
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
| xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
| xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
xenial |
Does not exist
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
| precise |
Ignored
(end of life)
|
|
| trusty |
Does not exist
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
| trusty |
Does not exist
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
| 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
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
| trusty |
Does not exist
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
precise |
Released
(3.13.0-83.127~precise1)
|
| trusty |
Does not exist
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Released
(3.16.0-69.89~14.04.1)
|
|
| upstream |
Released
(4.5~rc2)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Released
(3.19.0-56.62~14.04.1)
|
|
| upstream |
Released
(4.5~rc2)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Released
(4.2.0-34.39~14.04.1)
|
|
| upstream |
Released
(4.5~rc2)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
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~rc2)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.5~rc2)
|
|
| vivid |
Ignored
(end of life)
|
|
| wily |
Ignored
(end of life)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Does not exist
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.5~rc2)
|
|
| vivid |
Ignored
(end of life)
|
|
| wily |
Ignored
(end of life)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
| trusty |
Does not exist
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
| vivid |
Does not exist
|
|
| wily |
Released
(4.2.0-1027.35)
|
|
| xenial |
Not vulnerable
(4.4.0-1003.4)
|
|
| yakkety |
Not vulnerable
(4.4.0-1009.10)
|
|
| zesty |
Not vulnerable
(4.8.0-1013.15)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
| wily |
Does not exist
|
|
| xenial |
Not vulnerable
(4.4.0-1012.12)
|
|
| yakkety |
Not vulnerable
(4.4.0-1012.12)
|
|
| zesty |
Not vulnerable
(4.4.0-1029.32)
|
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
precise |
Released
(3.2.0-1480.106)
|
| trusty |
Does not exist
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| upstream |
Released
(4.5~rc2)
|
|
|
linux Launchpad, Ubuntu, Debian |
upstream |
Released
(4.5~rc2)
|
| precise |
Released
(3.2.0-102.142)
|
|
| trusty |
Released
(3.13.0-83.127)
|
|
| vivid |
Ignored
(end of life)
|
|
| wily |
Released
(4.2.0-34.39)
|
|
| xenial |
Not vulnerable
(4.4.0-7.22)
|
|
| yakkety |
Not vulnerable
(4.4.0-21.37)
|
|
| zesty |
Not vulnerable
(4.8.0-22.24)
|
|
|
Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||
|
linux-fsl-imx51 Launchpad, Ubuntu, Debian |
upstream |
Released
(4.5~rc2)
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
upstream |
Released
(4.5~rc2)
|
| precise |
Ignored
(end of life)
|
|
| trusty |
Does not exist
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
upstream |
Released
(4.5~rc2)
|
| precise |
Ignored
(end of life)
|
|
| trusty |
Does not exist
|
|
| vivid |
Does not exist
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.8 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0723
- http://lkml.iu.edu/hypermail/linux/kernel/1511.3/03045.html
- https://ubuntu.com/security/notices/USN-2932-1
- https://ubuntu.com/security/notices/USN-2930-1
- https://ubuntu.com/security/notices/USN-2930-2
- https://ubuntu.com/security/notices/USN-2929-2
- https://ubuntu.com/security/notices/USN-2929-1
- https://ubuntu.com/security/notices/USN-2930-3
- https://ubuntu.com/security/notices/USN-2948-1
- https://ubuntu.com/security/notices/USN-2967-2
- https://ubuntu.com/security/notices/USN-2967-1
- NVD
- Launchpad
- Debian