Candidate: CVE-2006-4813
References: 
 http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=152becd26e0563aefdbc4fd1fe491928efe92d1f
Description: 
 The __block_prepare_write function in fs/buffer.c for Linux kernel 2.6.x before 2.6.13
 does not properly clear buffers during certain error conditions, which allows local
 users to read portions of files that have been unlinked.
Ubuntu-Description:
 Dmitriy Monakhov discovered an information leak in the
 __block_prepare_write() function. During error recovery, this
 function did not properly clear memory buffers which could allow
 local users to read portions of unlinked files.
Notes: 
 dannf> I don't think 2.4 is affected because the BH_New bit is not
 dannf> cleared after get_block returns - marking 2.4.27 N/A
Bugs: 
upstream: released (2.6.13-rc1)
linux-2.6: released (2.6.13-1)
2.6.8-sarge-security: released (2.6.8-16sarge6) [__block_prepare_write-recovery.dpatch]
2.4.27-sarge-security: N/A
2.6.12-breezy-security: released (CVE-2006-4813)
2.6.15-dapper-security: released
2.6.17-edgy: released