diff options
| author | Paul Kot <pawlkt@gmail.com> | 2011-12-10 15:28:34 +0100 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-03-20 15:03:39 +0000 |
| commit | 83257435faca1827b17e7e6e1766f9c0c216595d (patch) | |
| tree | d857152f3f43a71df94f188820e52c9cf3183fa3 /net | |
| parent | 0eb97065d4a9bc3944f5973ce4279d37b0ef4eb8 (diff) | |
batman-adv: bat_socket_read missing checks
commit c00b6856fc642b234895cfabd15b289e76726430 upstream.
Writing a icmp_packet_rr and then reading icmp_packet can lead to kernel
memory corruption, if __user *buf is just below TASK_SIZE.
Signed-off-by: Paul Kot <pawlkt@gmail.com>
[sven@narfation.org: made it checkpatch clean]
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'net')
| -rw-r--r-- | net/batman-adv/icmp_socket.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c index ac3520e057c..a9d85853d2b 100644 --- a/net/batman-adv/icmp_socket.c +++ b/net/batman-adv/icmp_socket.c @@ -136,8 +136,8 @@ static ssize_t bat_socket_read(struct file *file, char __user *buf, spin_unlock_bh(&socket_client->lock); - error = __copy_to_user(buf, &socket_packet->icmp_packet, - socket_packet->icmp_len); + error = copy_to_user(buf, &socket_packet->icmp_packet, + socket_packet->icmp_len); packet_len = socket_packet->icmp_len; kfree(socket_packet); |