From: Kees Cook Date: Wed, 16 Jun 2021 19:53:33 +0000 (-0700) Subject: sh_eth: Avoid memcpy() over-reading of ETH_SS_STATS X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=224004fbb033600715dbd626bceec10bfd9c58bc;p=linux.git sh_eth: Avoid memcpy() over-reading of ETH_SS_STATS In preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for memcpy(), memmove(), and memset(), avoid intentionally reading across neighboring array fields. The memcpy() is copying the entire structure, not just the first array. Adjust the source argument so the compiler can do appropriate bounds checking. Signed-off-by: Kees Cook Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index c5b154868c1fc..713d3629b4c1c 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -2287,7 +2287,7 @@ static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data) { switch (stringset) { case ETH_SS_STATS: - memcpy(data, *sh_eth_gstrings_stats, + memcpy(data, sh_eth_gstrings_stats, sizeof(sh_eth_gstrings_stats)); break; }