Re: [PATCH 2/3] cifs: prevent use-after-free by freeing the cfile later

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Shyam Prasad N <nspmangalore@xxxxxxxxx> writes:

> In smb2_compound_op we have a possible use-after-free
> which can cause hard to debug problems later on.
>
> This was revealed during stress testing with KASAN enabled
> kernel. Fixing it by moving the cfile free call to
> a few lines below, after the usage.
>
> Fixes: 76894f3e2f71 ("cifs: improve symlink handling for smb2+")
> CC: Paulo Alcantara (SUSE) <pc@xxxxxx>
> Signed-off-by: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
> ---
>  fs/smb/client/smb2inode.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)

Reviewed-by: Paulo Alcantara (SUSE) <pc@xxxxxxxxxxxxx>



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