diff options
| author | Shuhao Fu <sfual@cse.ust.hk> | 2025-11-04 23:13:15 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-11-24 10:29:56 +0100 |
| commit | d6ab7ef52aafc9af76ac22b34143ac13a3fb19a3 (patch) | |
| tree | 80058469707785c09cbf0ad495b2495e69e0f85e /fs | |
| parent | c63dc33e3794163e98214ca0c2a7b6b1569126de (diff) | |
| download | linux-d6ab7ef52aafc9af76ac22b34143ac13a3fb19a3.tar.gz linux-d6ab7ef52aafc9af76ac22b34143ac13a3fb19a3.tar.bz2 linux-d6ab7ef52aafc9af76ac22b34143ac13a3fb19a3.zip | |
smb: client: fix refcount leak in smb2_set_path_attr
[ Upstream commit b540de9e3b4fab3b9e10f30714a6f5c1b2a50ec3 ]
Fix refcount leak in `smb2_set_path_attr` when path conversion fails.
Function `cifs_get_writable_path` returns `cfile` with its reference
counter `cfile->count` increased on success. Function `smb2_compound_op`
would decrease the reference counter for `cfile`, as stated in its
comment. By calling `smb2_rename_path`, the reference counter of `cfile`
would leak if `cifs_convert_path_to_utf16` fails in `smb2_set_path_attr`.
Fixes: 8de9e86c67ba ("cifs: create a helper to find a writeable handle by path name")
Acked-by: Henrique Carvalho <henrique.carvalho@suse.com>
Signed-off-by: Shuhao Fu <sfual@cse.ust.hk>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/smb/client/smb2inode.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/smb/client/smb2inode.c b/fs/smb/client/smb2inode.c index 232a3c289055..d6086394d0b8 100644 --- a/fs/smb/client/smb2inode.c +++ b/fs/smb/client/smb2inode.c @@ -1128,6 +1128,8 @@ static int smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon, smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb); if (smb2_to_name == NULL) { rc = -ENOMEM; + if (cfile) + cifsFileInfo_put(cfile); goto smb2_rename_path; } in_iov.iov_base = smb2_to_name; |