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CVE-2015-6252

Published: 19 August 2015

The vhost_dev_ioctl function in drivers/vhost/vhost.c in the Linux kernel before 4.1.5 allows local users to cause a denial of service (memory consumption) via a VHOST_SET_LOG_FD ioctl call that triggers permanent file-descriptor allocation.

From the Ubuntu security team

Marc-André Lureau discovered that the vhost driver did not properly release the userspace provided log file descriptor. A privileged attacker could use this to cause a denial of service (resource exhaustion).

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

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by 7932c0bd7740f4cd2aa168d3ce0199e7af7d72d5
linux-armadaxp
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-ec2
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-flo
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-gke
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-goldfish
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-grouper
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-hwe
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-hwe-edge
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-linaro-omap
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-linaro-shared
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-lts-quantal
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-lts-saucy
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-lts-utopic
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-lts-vivid
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-lts-wily
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-lts-xenial
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-maguro
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-mako
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-manta
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-mvl-dove
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-qcm-msm
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-raspi2
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-snapdragon
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)
linux-ti-omap4
Launchpad, Ubuntu, Debian
upstream
Released (4.2~rc5)