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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.

Priority

Low

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by 9a5cbce421a283e6aea3c4007f141735bf9da8c3
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-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.1~rc1)
linux-fsl-imx51
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-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-mvl-dove
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

References

Bugs