Candidate: CVE-2009-0746
Description:
 The make_indexed_dir function in fs/ext4/namei.c in the Linux kernel
 2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 does not validate
 a certain rec_len field, which allows local users to cause a denial
 of service (OOPS) by attempting to mount a crafted ext4 filesystem. 
References:
 http://bugzilla.kernel.org/show_bug.cgi?id=12430
 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e6b8bc09ba2075cd91fbffefcd2778b1a00bd76f
 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 (2.6.28-1) [bugfix/all/stable/2.6.28.7.patch]
2.6.18-etch-security: N/A
2.6.24-etch-security: ignored
2.6.26-lenny-security: released (2.6.26-13lenny2) [bugfix/all/ext4-add-sanity-check-to-make_indexed_dir.patch]
2.6.15-dapper-security:
2.6.22-gutsy-security:
2.6.24-hardy-security:
2.6.27-intrepid-security: