CVE-2015-5157

Published: 23 July 2015

arch/x86/entry/entry_64.S in the Linux kernel before 4.1.6 on the x86_64 platform mishandles IRET faults in processing NMIs that occurred during userspace execution, which might allow local users to gain privileges by triggering an NMI.

From the Ubuntu security team

Andy Lutomirski and Petr Matousek discovered that an NMI (non-maskable interrupt) that interrupts userspace and encounters an IRET fault is incorrectly handled by the Linux kernel. An unprivileged local user could exploit this flaw to cause a denial of service (kernel OOPs), corruption, or potentially escalate privileges on the system.

Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by 9b6e6a8334d56354853f9c255d1395c2ba570e0a
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.2~rc3)

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
Per oss-security, likely affects 3.3 and newer

References

Bugs