Candidate: CVE-2009-0747
Description:
 The ext4_isize function in fs/ext4/ext4.h in the Linux kernel
 2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 uses the
 i_size_high structure member during operations on arbitrary
 types of files, which allows local users to cause a denial of
 service (CPU consumption and error-message flood) by
 attempting to mount a crafted ext4 filesystem. 
References:
 http://bugzilla.kernel.org/show_bug.cgi?id=12375
 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=06a279d636734da32bb62dd2f7b0ade666f65d7c
 http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.19
 http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.7
Ubuntu-Description:
Notes:
 jmm> ext4 is marked as experimental and the vulnerability fairly
 jmm> obscure, I don't think we should spend energy on this. Dann,
 jmm> if you don't object I'll mark this as "unimportant" in the
 jmm> security tracker
Bugs:
upstream: released (2.6.28.7, 2.6.29-rc4)
linux-2.6: released (2.6.28-2) [bugfix/all/stable/2.6.28.7.patch]
2.6.18-etch-security: N/A
2.6.24-etch-security: N/A "code not present"
2.6.26-lenny-security: released (2.6.26-13lenny2) [bugfix/all/ext4-only-use-i_size_high-for-regular-files.patch]
2.6.15-dapper-security:
2.6.22-gutsy-security:
2.6.24-hardy-security:
2.6.27-intrepid-security: