CVE-2011-2928 Information

Description

The befs_follow_link function in fs/befs/linuxvfs.c in the Linux kernel before 3.1-rc3 does not validate the length attribute of long symlinks which allows local users to cause a denial of service (incorrect pointer dereference and OOPS) by accessing a long symlink on a malformed Be filesystem.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=338d0f0a6fbc82407864606f5b64b75aeb3c70f2 http://securityreason.com/securityalert/8360 http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.1-rc3 http://www.openwall.com/lists/oss-security/2011/08/19/1 http://www.openwall.com/lists/oss-security/2011/08/19/5 http://www.pre-cert.de/advisories/PRE-SA-2011-06.txt http://www.securityfocus.com/archive/1/519387/100/0/threaded http://www.securityfocus.com/bid/49256 https://exchange.xforce.ibmcloud.com/vulnerabilities/69343