CVE-2017-15126
Published: 14 January 2018
A use-after-free flaw was found in fs/userfaultfd.c in the Linux kernel before 4.13.6. The issue is related to the handling of fork failure when dealing with event messages. Failure to fork correctly can lead to a situation where a fork event will be removed from an already freed list of events with userfaultfd_ctx_put().
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
artful |
Released
(4.13.0-17.20)
|
| trusty |
Not vulnerable
|
|
| upstream |
Released
(4.14~rc4)
|
|
| xenial |
Not vulnerable
|
|
| zesty |
Ignored
(end of life)
|
|
|
Patches: Introduced by 893e26e61d04eac974ded0c11e1647b335c8cb7b |
||
|
linux-armadaxp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc4)
|
|
| 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 |
Not vulnerable
|
|
| upstream |
Released
(4.14~rc4)
|
|
| xenial |
Not vulnerable
|
|
| 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~rc4)
|
|
| 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~rc4)
|
|
| 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~rc4)
|
|
| xenial |
Ignored
(abandoned)
|
|
| zesty |
Does not exist
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc4)
|
|
| xenial |
Not vulnerable
(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~rc4)
|
|
| xenial |
Not vulnerable
|
|
| 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~rc4)
|
|
| xenial |
Not vulnerable
|
|
| zesty |
Ignored
(end of life)
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.14~rc4)
|
|
| 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~rc4)
|
|
| xenial |
Not vulnerable
(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~rc4)
|
|
| xenial |
Not vulnerable
(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~rc4)
|
|
| xenial |
Not vulnerable
|
|
| zesty |
Does not exist
|
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc4)
|
|
| 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~rc4)
|
|
| 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~rc4)
|
|
| 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~rc4)
|
|
| 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~rc4)
|
|
| 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~rc4)
|
|
| 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~rc4)
|
|
| 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~rc4)
|
|
| 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~rc4)
|
|
| 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~rc4)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Not vulnerable
|
|
| upstream |
Released
(4.14~rc4)
|
|
| 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~rc4)
|
|
| 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~rc4)
|
|
| 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~rc4)
|
|
| 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~rc4)
|
|
| xenial |
Not vulnerable
(4.13.0-1008.9)
|
|
| zesty |
Does not exist
|
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc4)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
artful |
Released
(4.13.0-1006.6)
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc4)
|
|
| xenial |
Not vulnerable
|
|
| zesty |
Ignored
(end of life)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc4)
|
|
| xenial |
Not vulnerable
|
|
| zesty |
Ignored
(end of life)
|
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.14~rc4)
|
|
| xenial |
Does not exist
|
|
| zesty |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.1 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |