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CVE-2015-8955

Published: 10 October 2016

arch/arm64/kernel/perf_event.c in the Linux kernel before 4.1 on arm64 platforms allows local users to gain privileges or cause a denial of service (invalid pointer dereference) via vectors involving events that are mishandled during a span of multiple HW PMUs.

From the Ubuntu security team

It was discovered that a use-after-free vulnerability existed in the performance events and counters subsystem of the Linux kernel for ARM64. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Priority

Medium

CVSS 3 base score: 7.3

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by 8fff105e13041e49b82f92eef034f363a6b1c071
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-azure
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-euclid
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-gcp
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-kvm
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-oem
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)

Notes

AuthorNote
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
tyhicks
specific to arm64 kernels

References