From: Namjae Jeon <linkinjeon@xxxxxxxxxx>
commit b8fc56fbca7482c1e5c0e3351c6ae78982e25ada upstream.
ksmbd_user_session_put should be called under smb3_preauth_hash_rsp().
It will avoid freeing session before calling smb3_preauth_hash_rsp().
Cc: stable@xxxxxxxxxxxxxxx # v5.15+
Reported-by: Norbert Szetei <norbert@xxxxxxxxxxxx>
Tested-by: Norbert Szetei <norbert@xxxxxxxxxxxx>
Signed-off-by: Namjae Jeon <linkinjeon@xxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/smb/server/server.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/smb/server/server.c
+++ b/fs/smb/server/server.c
@@ -238,11 +238,11 @@ static void __handle_ksmbd_work(struct k
} while (is_chained == true);
send:
- if (work->sess)
- ksmbd_user_session_put(work->sess);
if (work->tcon)
ksmbd_tree_connect_put(work->tcon);
smb3_preauth_hash_rsp(work);
+ if (work->sess)
+ ksmbd_user_session_put(work->sess);
if (work->sess && work->sess->enc && work->encrypted &&
conn->ops->encrypt_resp) {
rc = conn->ops->encrypt_resp(work);
Patches currently in stable-queue which might be from linkinjeon@xxxxxxxxxx are
queue-6.1/ksmbd-fix-slab-use-after-free-in-ksmbd_smb2_session_create.patch
queue-6.1/ksmbd-fix-the-missing-xa_store-error-check.patch
queue-6.1/ksmbd-fix-slab-use-after-free-in-smb3_preauth_hash_rsp.patch
