Your submission was sent successfully! Close

CVE-2014-0069

Published: 28 February 2014

The cifs_iovec_write function in fs/cifs/file.c in the Linux kernel through 3.13.5 does not properly handle uncached write operations that copy fewer than the requested number of bytes, which allows local users to obtain sensitive information from kernel memory, cause a denial of service (memory corruption and system crash), or possibly gain privileges via a writev system call with a crafted pointer.

From the Ubuntu security team

Al Viro discovered an error in how CIFS in the Linux kernel handles uncached write operations. An unprivileged local user could exploit this flaw to cause a denial of service (system crash), obtain sensitive information from kernel memory, or possibly gain privileges.

Notes

AuthorNote
jdstrand
android kernels (goldfish, grouper, maguro, mako and manta) are not
supported on the Ubuntu Touch 13.10 preview kernels
seth-arnold
fix not yet in Linus's tree as of 2014-02-20
apw
it seems the first fix is the CVE fix and will be: 5d81de8e8667da7135d3a32a964087c0faf5483f
the second patch is a nice to have for future issues
patch: http://article.gmane.org/gmane.linux.kernel.cifs/9401 (fixes bug)
patch: http://article.gmane.org/gmane.linux.kernel.cifs/9402 (hardening)
Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
Patches:
Introduced by

72432ffcf555decbbae47f1be338e1d2f210aa69

Fixed by 5d81de8e8667da7135d3a32a964087c0faf5483f
linux-armadaxp
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-ec2
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-flo
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-gke
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-goldfish
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-grouper
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-hwe
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-hwe-edge
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-linaro-omap
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-linaro-shared
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-lts-quantal
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-lts-raring
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-lts-saucy
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-lts-trusty
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-lts-utopic
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-lts-vivid
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-lts-wily
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-lts-xenial
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-maguro
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-mako
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-manta
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-mvl-dove
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-qcm-msm
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-raspi2
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-snapdragon
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)
linux-ti-omap4
Launchpad, Ubuntu, Debian
upstream
Released (3.14~rc4)