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Date: Mon, 12 Dec 2011 19:31:53 +0800 From: Marek Lindner <lindner_marek@...oo.de> To: davem@...emloft.net Cc: netdev@...r.kernel.org, b.a.t.m.a.n@...ts.open-mesh.org, Paul Kot <pawlkt@...il.com>, Sven Eckelmann <sven@...fation.org>, Marek Lindner <lindner_marek@...oo.de> Subject: [PATCH 09/11] batman-adv: bat_socket_read missing checks From: Paul Kot <pawlkt@...il.com> 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@...il.com> [sven@...fation.org: made it checkpatch clean] Signed-off-by: Sven Eckelmann <sven@...fation.org> Signed-off-by: Marek Lindner <lindner_marek@...oo.de> --- 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 defd692..88ab26f 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); -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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