CVE-2016-6516
Published: 6 August 2016
Race condition in the ioctl_file_dedupe_range function in fs/ioctl.c in the Linux kernel through 4.7 allows local users to cause a denial of service (heap-based buffer overflow) or possibly gain privileges by changing a certain count value, aka a "double fetch" vulnerability.
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 |
Not vulnerable
|
|
| upstream |
Released
(4.8~rc1)
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
(4.8.0-11.12)
|
|
|
Patches: Introduced by 54dbc15172375641ef03399e8f911d7165eb90fb |
||
|
linux-armadaxp Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.8~rc1)
|
|
| 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
|
|
| upstream |
Released
(4.8~rc1)
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Does not exist
|
|
|
linux-flo Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.8~rc1)
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.8~rc1)
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Does not exist
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.8~rc1)
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.8~rc1)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.8~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
(4.8~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
(4.8~rc1)
|
|
| 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
(4.8~rc1)
|
|
| 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
(4.8~rc1)
|
|
| 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
(4.8~rc1)
|
|
| 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
(4.8~rc1)
|
|
| 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
(4.8~rc1)
|
|
| 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 |
Not vulnerable
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.8~rc1)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was not-affected)
|
|
| upstream |
Released
(4.8~rc1)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was not-affected)
|
|
| upstream |
Released
(4.8~rc1)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was not-affected)
|
|
| upstream |
Released
(4.8~rc1)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Not vulnerable
|
|
| upstream |
Released
(4.8~rc1)
|
|
| 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
(4.8~rc1)
|
|
| 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
(4.8~rc1)
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.8~rc1)
|
|
| 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
(4.8~rc1)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.8~rc1)
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
(4.8.0-1012.14)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.8~rc1)
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
|
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.8~rc1)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.4 |
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |