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net/appletalk: Fix kernel memory disclosure

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[ Upstream commit ce7e40c432ba84da104438f6799d460a4cad41bc ]

ipddp_route structs contain alignment padding so kernel heap memory
is leaked when they are copied to user space in
ipddp_ioctl(SIOCFINDIPDDPRT). Change kmalloc() to kzalloc() to clear
that memory.

Signed-off-by: Vlad Tsyrklevich <vlad@tsyrklevich.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vlad Tsyrklevich 2017-01-09 20:57:48 +07:00 • committed by Greg Kroah-Hartman
parent c73b58cfa8
commit 1bb50d02a8
1 changed files with 1 additions and 1 deletions
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2
drivers/net/appletalk/ipddp.c
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@ -191,7 +191,7 @@ static netdev_tx_t ipddp_xmit(struct sk_buff *skb, struct net_device *dev)
*/
static int ipddp_create(struct ipddp_route *new_rt)
{
struct ipddp_route *rt = kmalloc(sizeof(*rt), GFP_KERNEL);
struct ipddp_route *rt = kzalloc(sizeof(*rt), GFP_KERNEL);
if (rt == NULL)
return -ENOMEM;