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TITLE:
Linux Kernel "cifs_create()" NULL Pointer Dereference

SECUNIA ADVISORY ID:
SA39344

VERIFY ADVISORY:
http://secunia.com/advisories/39344/

DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service).

The vulnerability is caused due to a NULL-pointer dereference error
within the "cifs_create()" function in fs/cifs/dir.c. This can be
exploited to cause a crash when a file without an associated
"nameidata" structure is created.

The vulnerability is reported in version 2.6.29-rc6 and later.

SOLUTION:
Restrict local access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Eugene Teo, Red Hat

ORIGINAL ADVISORY:
http://www.openwall.com/lists/oss-security/2010/04/05/1
https://bugzilla.redhat.com/show_bug.cgi?id=579445

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