CVE-2011-3363

Published: 03 October 2011

The setup_cifs_sb function in fs/cifs/connect.c in the Linux kernel before 2.6.39 does not properly handle DFS referrals, which allows remote CIFS servers to cause a denial of service (system crash) by placing a referral at the root of a share.

From the Ubuntu security team

Yogesh Sharma discovered that CIFS did not correctly handle UNCs that had no prefixpaths. A local attacker with access to a CIFS partition could exploit this to crash the system, leading to a denial of service.

Priority

Medium

CVSS 3 base score: 6.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39)
Patches:
Introduced by e4cce94c9c8797b08faf6a79396df4d175e377fa
Fixed by 70945643722ffeac779d2529a348f99567fa5c33
Introduced by e4cce94c9c8797b08faf6a79396df4d175e377fa
Fixed by 221d1d797202984cb874e3ed9f1388593d34ee22
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39)
linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39)
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39)