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CVE-2018-9415

Published: 3 July 2018

In driver_override_store and driver_override_show of bus.c, there is a possible double free due to improper locking. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android kernel Android ID: A-69129004 References: Upstream kernel.

From the Ubuntu Security Team

It was discovered that a race condition existed in the ARM Advanced Microcontroller Bus Architecture (AMBA) driver in the Linux kernel that could result in a double free. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Notes

AuthorNote
sbeattie
the fix to drivers/pci/pci-sysfs.c in the first patchwork
link may be needed, too.

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic
Released (4.15.0-33.36)
cosmic Not vulnerable
(4.17.0-6.7)
trusty Not vulnerable

upstream
Released (4.17~rc3)
xenial
Released (4.4.0-128.154)
Patches:
Introduced by

3cf385713460eb2bb4cb7ceb8ed89833b00b594b

Fixed by 6a7228d90d42bcacfe38786756ba62762b91c20a
linux-aws
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1020.20)
cosmic Not vulnerable
(4.15.0-1020.20)
trusty
Released (4.4.0-1023.23)
upstream
Released (4.17~rc3)
xenial
Released (4.4.0-1061.70)
linux-azure
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1022.23)
cosmic Not vulnerable
(4.18.0-1003.3)
trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
upstream
Released (4.17~rc3)
xenial
Released (4.15.0-1022.22~16.04.1)
linux-euclid
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial Ignored
(was needed ESM criteria)
linux-azure-edge
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.18.0-1003.3~18.04.1)
cosmic Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.15.0-1022.23)
linux-flo
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.17~rc3)
xenial Ignored
(abandoned)
linux-gcp
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1018.19)
cosmic Not vulnerable
(4.15.0-1018.19)
trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.15.0-1018.19~16.04.2)
linux-gke
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial Ignored
(end of standard support)
linux-goldfish
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.17~rc3)
xenial Ignored
(end of life)
linux-grouper
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.17~rc3)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable

cosmic Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.15.0-33.36~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.18.0-11.12~18.04.1)
cosmic Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.15.0-33.36~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1020.20)
cosmic Not vulnerable
(4.15.0-1020.20)
trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.4.0-1027.32)
linux-lts-trusty
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.17~rc3)
xenial Does not exist

linux-lts-vivid
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.17~rc3)
xenial Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.17~rc3)
xenial Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty
Released (4.4.0-128.154~14.04.1)
upstream
Released (4.17~rc3)
xenial Does not exist

linux-maguro
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.17~rc3)
xenial Does not exist

linux-mako
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.17~rc3)
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.17~rc3)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1017.20)
cosmic Not vulnerable
(4.15.0-1017.20)
trusty Does not exist

upstream
Released (4.17~rc3)
xenial Ignored
(end of standard support, was needed)
linux-raspi2
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic
Released (4.15.0-1021.23)
cosmic Not vulnerable
(4.15.0-1021.23)
trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.4.0-1091.99)
linux-snapdragon
Launchpad, Ubuntu, Debian
artful
Released (4.4.0-1094.99)
bionic Not vulnerable

cosmic Does not exist

trusty Does not exist

upstream
Released (4.17~rc3)
xenial
Released (4.4.0-1094.99)

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:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H