From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 6 Aug 2009 02:27:43 +0000 (+0000)
Subject: appletalk: fix atalk_getname() leak
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3d392475c873c10c10d6d96b94d092a34ebd4791;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

appletalk: fix atalk_getname() leak

atalk_getname() can leak 8 bytes of kernel memory to user

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 590b83963622..9ef6ff26eb0c 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1237,6 +1237,7 @@ static int atalk_getname(struct socket *sock, struct sockaddr *uaddr,
 			return -ENOBUFS;
 
 	*uaddr_len = sizeof(struct sockaddr_at);
+	memset(&sat.sat_zero, 0, sizeof(sat.sat_zero));
 
 	if (peer) {
 		if (sk->sk_state != TCP_ESTABLISHED)