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CVE-2015-6526

Published: 31 August 2015

The perf_callchain_user_64 function in arch/powerpc/perf/callchain.c in the Linux kernel before 4.0.2 on ppc64 platforms allows local users to cause a denial of service (infinite loop) via a deep 64-bit userspace backtrace.

From the Ubuntu Security Team

It was discovered that the Linux kernel's perf subsystem did not bound callchain backtraces on PowerPC 64. A local attacker could use this to cause a denial of service.

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

Priority

Low

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
precise
Released (3.2.0-91.129)
trusty
Released (3.13.0-49.83)
upstream
Released (4.1~rc1)
vivid Not vulnerable
(3.19.0-14.14)
wily Not vulnerable
(3.19.0-15.15)
xenial Not vulnerable
(4.2.0-16.19)
yakkety Not vulnerable
(4.4.0-21.37)
zesty Not vulnerable
(4.8.0-22.24)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by 9a5cbce421a283e6aea3c4007f141735bf9da8c3
linux-armadaxp
Launchpad, Ubuntu, Debian
precise
Released (3.2.0-1656.78)
trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
trusty Not vulnerable
(4.4.0-1002.2)
upstream
Released (4.1~rc1)
xenial Not vulnerable
(4.4.0-1001.10)
yakkety Does not exist

zesty Does not exist

precise Does not exist

linux-ec2
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-flo
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.1~rc1)
vivid Ignored
(end of life)
wily Ignored
(end of life)
xenial Ignored
(abandoned)
yakkety Ignored
(end of life)
zesty Does not exist

linux-fsl-imx51
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-gke
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.1~rc1)
xenial Not vulnerable
(4.4.0-1003.3)
yakkety Does not exist

zesty Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.1~rc1)
vivid Ignored
(end of life)
wily Ignored
(end of life)
xenial Ignored
(abandoned)
yakkety Ignored
(end of life)
zesty Ignored
(end of life)
linux-grouper
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist

upstream
Released (4.1~rc1)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
yakkety Does not exist

zesty Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.1~rc1)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
yakkety Does not exist

zesty Does not exist

linux-linaro-omap
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-shared
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-vexpress
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-quantal
Launchpad, Ubuntu, Debian
precise Ignored
(end of life, was needed)
trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty 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, was needs-triage)
trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-saucy
Launchpad, Ubuntu, Debian
precise Ignored
(end of life, was needed)
trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
precise
Released (3.13.0-51.84~precise1)
trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty
Released (3.16.0-34.47~14.04.1)
upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist
(trusty was not-affected [3.19.0-18.18~14.04.1])
upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist
(trusty was not-affected [4.2.0-18.22~14.04.1])
upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Not vulnerable
(4.4.0-13.29~14.04.1)
upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist
(trusty was ignored)
upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist
(trusty was ignored)
upstream
Released (4.1~rc1)
vivid Ignored
(end of life)
wily Ignored
(end of life)
xenial Ignored
(abandoned)
yakkety Ignored
(end of life)
zesty Does not exist

linux-manta
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.1~rc1)
vivid Ignored
(end of life)
wily Ignored
(end of life)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-mvl-dove
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Not vulnerable
(4.2.0-1008.12)
xenial Not vulnerable
(4.2.0-1013.19)
yakkety Not vulnerable
(4.4.0-1009.10)
zesty Not vulnerable
(4.8.0-1013.15)
linux-snapdragon
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.1~rc1)
wily Does not exist

xenial Not vulnerable
(4.4.0-1012.12)
yakkety Not vulnerable
(4.4.0-1012.12)
zesty Not vulnerable
(4.4.0-1029.32)
linux-ti-omap4
Launchpad, Ubuntu, Debian
precise
Released (3.2.0-1471.92)
trusty Does not exist

upstream
Released (4.1~rc1)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist