CVE-2017-15951
Published: 27 October 2017
The KEYS subsystem in the Linux kernel before 4.13.10 does not correctly synchronize the actions of updating versus finding a key in the "negative" state to avoid a race condition, which allows local users to cause a denial of service or possibly have unspecified other impact via crafted system calls.
From the Ubuntu Security Team
Eric Biggers discovered a race condition in the key management subsystem of the Linux kernel around keys in a negative state. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
artful |
Released
(4.13.0-19.22)
|
| trusty |
Not vulnerable
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Released
(4.4.0-101.124)
|
|
| zesty |
Ignored
(end of life)
|
|
|
Patches: Introduced by 146aa8b1453bd8f1ff2304ffb71b4ee0eb9acdcc |
||
|
linux-armadaxp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-aws Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Released
(4.4.0-1003.3)
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Released
(4.4.0-1041.50)
|
|
| zesty |
Does not exist
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Not vulnerable
(4.15.0-1023.24~14.04.1)
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Released
(4.13.0-1005.7)
|
|
| zesty |
Does not exist
|
|
|
linux-euclid Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Ignored
(was needed ESM criteria)
|
|
| zesty |
Does not exist
|
|
|
linux-flo Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Ignored
(abandoned)
|
|
| zesty |
Does not exist
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Released
(4.13.0-1002.5)
|
|
| zesty |
Does not exist
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Released
(4.4.0-1034.34)
|
|
| zesty |
Does not exist
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Not vulnerable
|
|
| zesty |
Not vulnerable
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Released
(4.13.0-26.29~16.04.2)
|
|
| zesty |
Does not exist
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Released
(4.13.0-26.29~16.04.2)
|
|
| zesty |
Does not exist
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Released
(4.4.0-1010.15)
|
|
| zesty |
Does not exist
|
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-raring Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Ignored
(end of life, was needs-triage)
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Released
(4.4.0-101.124~14.04.1)
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Ignored
(abandoned)
|
|
| zesty |
Does not exist
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Released
(4.13.0-1010.11)
|
|
| zesty |
Does not exist
|
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
artful |
Released
(4.13.0-1008.8)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Released
(4.4.0-1077.85)
|
|
| zesty |
Ignored
(end of life)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
artful |
Released
(4.4.0-1079.84)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Released
(4.4.0-1079.84)
|
|
| zesty |
Released
(4.4.0-1079.84)
|
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc6)
|
|
| xenial |
Does not exist
|
|
| zesty |
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
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=363b02dab09b3226f3bd1420dad9c72b79a42a76
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.10
- https://github.com/torvalds/linux/commit/363b02dab09b3226f3bd1420dad9c72b79a42a76
- https://ubuntu.com/security/notices/USN-3485-1
- https://ubuntu.com/security/notices/USN-3485-2
- https://ubuntu.com/security/notices/USN-3485-3
- https://ubuntu.com/security/notices/USN-3507-1
- https://ubuntu.com/security/notices/USN-3507-2
- https://www.cve.org/CVERecord?id=CVE-2017-15951
- NVD
- Launchpad
- Debian