CVE-2016-0774

Published: 27 April 2016

The (1) pipe_read and (2) pipe_write implementations in fs/pipe.c in a certain Linux kernel backport in the linux package before 3.2.73-2+deb7u3 on Debian wheezy and the kernel package before 3.10.0-229.26.2 on Red Hat Enterprise Linux (RHEL) 7.1 do not properly consider the side effects of failed __copy_to_user_inatomic and __copy_from_user_inatomic calls, which allows local users to cause a denial of service (system crash) or possibly gain privileges via a crafted application, aka an "I/O vector array overrun." NOTE: this vulnerability exists because of an incorrect fix for CVE-2015-1805.

From the Ubuntu security team

It was discovered that the Linux kernel did not keep accurate track of pipe buffer details when error conditions occurred, due to an incomplete fix for CVE-2015-1805. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code with administrative privileges.

Priority

Medium

CVSS 3 base score: 6.8

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

Patches:
Introduced by local-2016-0774-break
Fixed by local-2016-0774-fix
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-flo
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-gke
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-goldfish
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-grouper
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-hwe
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-maguro
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-mako
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-manta
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-raspi2
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

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