Bugzilla – Bug 889060
VUL-0: CVE-2014-5045: kernel-source: vfs: refcount issues during unmount on symlink
Last modified: 2016-04-27 19:11:20 UTC
A flaw was found in the way reference counting was handled in the Linux kernel's
VFS subsystem when unmount on symlink was performed.
https://lkml.org/lkml/2014/7/21/98 (proposed patch)
bugbot adjusting priority
The fix is public 295dc39d941d (fs: umount on symlink leaks mnt count).
It seems that the issue has been introduced by 8033426e6bdb2 (vfs: allow umount to handle mountpoints without revalidating them) in 3.12 which would mean that only SLE12 is affected. Miklos, could you double check please?
The backport seems trivial. I will attach it here in the next comment.
Created attachment 600026 [details]
backport got SLE12
pushed to SLE12 branch.
*** Bug 887713 has been marked as a duplicate of this bug. ***
Miklos, please confirm that the bug only affects SLE12 and close the bug in such case.
Bug was introduced inv 3.12-rc1 by
8033426e6bdb vfs: allow umount to handle mountpoints without revalidating them
So only kernels 3.12 - .16 are affected.