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| author | Oliver Hartkopp <socketcan@hartkopp.net> | 2021-01-12 10:16:43 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-17 14:17:05 +0100 |
| commit | 61e8c02ae6d671e98ab2d82fa26815c480740961 (patch) | |
| tree | fd455ca741edab7c18156858a7eff1fafeb0ccd2 /net | |
| parent | 6f7a362e1c6fdc6fd9c0bea4c9b6f34b6d063a3f (diff) | |
| download | linux-stable-61e8c02ae6d671e98ab2d82fa26815c480740961.tar.gz linux-stable-61e8c02ae6d671e98ab2d82fa26815c480740961.tar.bz2 linux-stable-61e8c02ae6d671e98ab2d82fa26815c480740961.zip | |
can: isotp: isotp_getname(): fix kernel information leak
commit b42b3a2744b3e8f427de79896720c72823af91ad upstream.
Initialize the sockaddr_can structure to prevent a data leak to user space.
Suggested-by: Cong Wang <xiyou.wangcong@gmail.com>
Reported-by: syzbot+057884e2f453e8afebc8@syzkaller.appspotmail.com
Fixes: e057dd3fc20f ("can: add ISO 15765-2:2016 transport protocol")
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/r/20210112091643.11789-1-socketcan@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/can/isotp.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/can/isotp.c b/net/can/isotp.c index 26bdc3c20b7e..8bd565f2073e 100644 --- a/net/can/isotp.c +++ b/net/can/isotp.c @@ -1139,6 +1139,7 @@ static int isotp_getname(struct socket *sock, struct sockaddr *uaddr, int peer) if (peer) return -EOPNOTSUPP; + memset(addr, 0, sizeof(*addr)); addr->can_family = AF_CAN; addr->can_ifindex = so->ifindex; addr->can_addr.tp.rx_id = so->rxid; |