diff options
| author | Kees Cook <keescook@chromium.org> | 2021-11-18 12:30:45 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-11-19 11:23:23 +0000 |
| commit | e3617433c3da3d0859a4bc67f3f975e87f650ebf (patch) | |
| tree | cb4796fddd9baca43d51ee4e10687cce93ff979c | |
| parent | f5455a1d9d499e4028b8ae8370758efad00b00e9 (diff) | |
| download | linux-e3617433c3da3d0859a4bc67f3f975e87f650ebf.tar.bz2 | |
net: 802: Use memset_startat() to clear struct fields
In preparation for FORTIFY_SOURCE performing compile-time and run-time
field bounds checking for memset(), avoid intentionally writing across
neighboring fields.
Use memset_startat() so memset() doesn't get confused about writing
beyond the destination member that is intended to be the starting point
of zeroing through the end of the struct.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/802/hippi.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/802/hippi.c b/net/802/hippi.c index 887e73d520e4..1997b7dd265e 100644 --- a/net/802/hippi.c +++ b/net/802/hippi.c @@ -65,7 +65,7 @@ static int hippi_header(struct sk_buff *skb, struct net_device *dev, hip->le.src_addr_type = 2; /* 12 bit SC address */ memcpy(hip->le.src_switch_addr, dev->dev_addr + 3, 3); - memset(&hip->le.reserved, 0, 16); + memset_startat(&hip->le, 0, reserved); hip->snap.dsap = HIPPI_EXTENDED_SAP; hip->snap.ssap = HIPPI_EXTENDED_SAP; |