CVE-2015-4170

Published: 02 May 2016

Race condition in the ldsem_cmpxchg function in drivers/tty/tty_ldsem.c in the Linux kernel before 3.13-rc4-next-20131218 allows local users to cause a denial of service (ldsem_down_read and ldsem_down_write deadlock) by establishing a new tty thread during shutdown of a previous tty thread.

Priority

Medium

CVSS 3 base score: 4.7

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
Patches:
Introduced by 4898e640caf03fdbaf2122d5a33949bf3e4a5b34
Fixed by cf872776fc84128bb779ce2b83a37c884c3203ae
linux-2.6
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (3.13~rc5)

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