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isdn: mISDN: socket: fix information leak to userland 

Structure mISDN_devinfo is copied to userland with the field "name"
that has the last elements unitialized.  It leads to leaking of
contents of kernel stack memory.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Kulikov Vasiliy 2010-10-29 23:04:33 +00:00 committed by David S. Miller
parent 3e9ebd3cf4
commit ce384d91cd
1 changed files with 2 additions and 0 deletions
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2
drivers/isdn/mISDN/socket.c
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@ -392,6 +392,7 @@ data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
if (dev) {
struct mISDN_devinfo di;
memset(&di, 0, sizeof(di));
di.id = dev->id;
di.Dprotocols = dev->Dprotocols;
di.Bprotocols = dev->Bprotocols | get_all_Bprotocols();
@ -672,6 +673,7 @@ base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
if (dev) {
struct mISDN_devinfo di;
memset(&di, 0, sizeof(di));
di.id = dev->id;
di.Dprotocols = dev->Dprotocols;
di.Bprotocols = dev->Bprotocols | get_all_Bprotocols();