Candidate: CVE-2005-3356
References: 
 http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=7c7dce9209161eb260cdf9e9172f72c3a02379e6h+p=12dbf3fc4d06d2c0c4c44dc0612df04248b3cfd3
Description: 
 [PATCH] Fix double decrement of mqueue_mnt->mnt_count in sys_mq_open
 .
 Fixed the refcounting on failure exits in sys_mq_open() and
 cleaned the logics up.  Rules are actually pretty simple - dentry_open()
 expects vfsmount and dentry to be pinned down and it either transfers
 them into created struct file or drops them.  Old code had been very
 confused in that area - if dentry_open() had failed either in do_open()
 or do_create(), we ended up dentry and mqueue_mnt dropped twice, once
 by dentry_open() cleanup and then by sys_mq_open().
 .
 Fix consists of making the rules for do_create() and do_open()
 same as for dentry_open() and updating the sys_mq_open() accordingly;
 that actually leads to more straightforward code and less work on
 normal path.
 .
 Signed-off-by: Al Viro <aviro@redhat.com>
 Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Notes: 
 jmm> Discovered by Doug Chapman
Bugs: 
upstream: released (2.6.15.2)
linux-2.6: released (2.6.15-4)
2.6.8-sarge-security: released (2.6.8-16sarge2)
2.4.27-sarge-security: N/A
2.4.19-woody-security: N/A
2.4.18-woody-security: N/A
2.4.17-woody-security: N/A
2.4.16-woody-security: N/A
2.4.17-woody-security-hppa: N/A
2.4.17-woody-security-ia64: N/A