linux-kernel - [PATCH 4.16 01/26] cifs: smbd: Check for iov length on sending the last iov

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 25 Apr 2018 12:33:10 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Long Li <longli@...rosoft.com>,
        Steve French <stfrench@...rosoft.com>,
        Ronnie Sahlberg <lsahlber@...hat.com>
Subject: [PATCH 4.16 01/26] cifs: smbd: Check for iov length on sending the last iov

4.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Long Li <longli@...rosoft.com>

commit ab60ee7bf9a84954f50a66a3d835860e80f99b7f upstream.

When sending the last iov that breaks into smaller buffers to fit the
transfer size, it's necessary to check if this is the last iov.

If this is the latest iov, stop and proceed to send pages.

Signed-off-by: Long Li <longli@...rosoft.com>
Cc: stable@...r.kernel.org
Signed-off-by: Steve French <stfrench@...rosoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/cifs/smbdirect.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/cifs/smbdirect.c
+++ b/fs/cifs/smbdirect.c
@@ -2194,6 +2194,8 @@ int smbd_send(struct smbd_connection *in
 						goto done;
 				}
 				i++;
+				if (i == rqst->rq_nvec)
+					break;
 			}
 			start = i;
 			buflen = 0;