From: Colin Ian King colin.king@canonical.com
commit 210782038b54ec8e9059a3c12d6f6ae173efa3a9 upstream.
Currently in the case where SMB2_ioctl returns the -EOPNOTSUPP error there is a memory leak of pneg_inbuf. Fix this by returning via the out_free_inbuf exit path that will perform the relevant kfree.
Addresses-Coverity: ("Resource leak") Fixes: 969ae8e8d4ee ("cifs: Accept validate negotiate if server return NT_STATUS_NOT_SUPPORTED") CC: Stable stable@vger.kernel.org # v5.1+ Signed-off-by: Colin Ian King colin.king@canonical.com Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/cifs/smb2pdu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -887,7 +887,8 @@ int smb3_validate_negotiate(const unsign * not supported error. Client should accept it. */ cifs_dbg(VFS, "Server does not support validate negotiate\n"); - return 0; + rc = 0; + goto out_free_inbuf; } else if (rc != 0) { cifs_dbg(VFS, "validate protocol negotiate failed: %d\n", rc); rc = -EIO;