CVE-2012-5375 Information

Description

The CRC32C feature in the Btrfs implementation in the Linux kernel before 3.8-rc1 allows local users to cause a denial of service (prevention of file creation) by leveraging the ability to write to a directory important to the victim and creating a file with a crafted name that is associated with a specific CRC32C hash value.

Reference

http://crypto.junod.info/2012/12/13/hash-dos-and-btrfs/ http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9c52057c698fb96f8f07e7a4bcf4801a092bda89 http://openwall.com/lists/oss-security/2012/12/13/20 http://www.kernel.org/pub/linux/kernel/v3.x/testing/patch-3.8-rc1.bz2 http://www.ubuntu.com/usn/USN-1944-1 http://www.ubuntu.com/usn/USN-1945-1 http://www.ubuntu.com/usn/USN-1946-1 http://www.ubuntu.com/usn/USN-1947-1 http://www.ubuntu.com/usn/USN-2017-1 https://github.com/torvalds/linux/commit/9c52057c698fb96f8f07e7a4bcf4801a092bda89