Messages in this thread | | | Subject | Re: [PATCH] ima: Fix use-after-free on a dentry's dname.name | From | Mimi Zohar <> | Date | Thu, 28 Mar 2024 21:02:37 -0400 |
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On Fri, 2024-03-22 at 10:03 -0400, Stefan Berger wrote: > ->d_name.name can change on rename and the earlier value can be freed; > there are conditions sufficient to stabilize it (->d_lock on dentry, > ->d_lock on its parent, ->i_rwsem exclusive on the parent's inode, > rename_lock), but none of those are met at any of the sites. Take a stable > snapshot of the name instead. > > Link: https://lore.kernel.org/all/20240202182732.GE2087318@ZenIV/ > Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> > Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Thanks, Al, Stefan.
Mimi
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