Commit c6981347 authored by luosili's avatar luosili Committed by Steve French
Browse files

ksmbd: fix uaf in smb20_oplock_break_ack 



drop reference after use opinfo.

Signed-off-by: default avatarluosili <rootlab@huawei.com>
Signed-off-by: default avatarNamjae Jeon <linkinjeon@kernel.org>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 5a7ee91d

fs/smb/server/smb2pdu.c

+2 −2
Original line number Diff line number Diff line
@@ -8038,10 +8038,10 @@ static void smb20_oplock_break_ack(struct ksmbd_work *work) 
		goto err_out;

	}



	opinfo_put(opinfo);

	ksmbd_fd_put(work, fp);

	opinfo->op_state = OPLOCK_STATE_NONE;

	wake_up_interruptible_all(&opinfo->oplock_q);

	opinfo_put(opinfo);

	ksmbd_fd_put(work, fp);



	rsp->StructureSize = cpu_to_le16(24);

	rsp->OplockLevel = rsp_oplevel;