4.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Disseldorp <ddiss@xxxxxxx> commit 0e5c795592930d51fd30d53a2e7b73cba022a29b upstream. The server may respond with success, and an output buffer less than sizeof(struct smb_snapshot_array) in length. Do not leak the output buffer in this case. Fixes: 834170c85978 ("Enable previous version support") Signed-off-by: David Disseldorp <ddiss@xxxxxxx> Signed-off-by: Steve French <smfrench@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/cifs/smb2ops.c | 1 + 1 file changed, 1 insertion(+) --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -924,6 +924,7 @@ smb3_enum_snapshots(const unsigned int x } if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) { rc = -ERANGE; + kfree(retbuf); return rc; }