netdev - [PATCH net-next 14/19] batadv_socket_read(): get rid of pointless access

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]

Message-Id: <20200521003721.3023783-14-viro@ZenIV.linux.org.uk>
Date:   Thu, 21 May 2020 01:37:16 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, viro@...iv.linux.org.uk,
        linux-kernel@...r.kernel.org
Subject: [PATCH net-next 14/19] batadv_socket_read(): get rid of pointless access_ok()

From: Al Viro <viro@...iv.linux.org.uk>

address is passed only to copy_to_user()

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 net/batman-adv/icmp_socket.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index ccb535c77e5d..8bdabc03b0b2 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -135,9 +135,6 @@ static ssize_t batadv_socket_read(struct file *file, char __user *buf,
 	if (!buf || count < sizeof(struct batadv_icmp_packet))
 		return -EINVAL;
 
-	if (!access_ok(buf, count))
-		return -EFAULT;
-
 	error = wait_event_interruptible(socket_client->queue_wait,
 					 socket_client->queue_len);
 
-- 
2.11.0