CVE-2011-3191

Published: 25 August 2011

Integer signedness error in the CIFSFindNext function in fs/cifs/cifssmb.c in the Linux kernel before 3.1 allows remote CIFS servers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a large length value in a response to a read request for a directory.

From the Ubuntu security team

Darren Lavender discovered that the CIFS client incorrectly handled certain large values. A remote attacker with a malicious server could exploit this to crash the system or possibly execute arbitrary code as the root user.

Priority

Medium

CVSS 3 base score: 8.8

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (3.1~rc7)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by 9438fabb73eb48055b58b89fc51e0bc4db22fabd
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (3.1~rc7)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (3.1~rc7)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
Upstream
Released (3.1~rc7)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
Upstream
Released (3.1~rc7)
linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
Upstream
Released (3.1~rc7)
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (3.1~rc7)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (3.1~rc7)