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: https://git.stricted.de/?a=commitdiff_plain;h=c844b7c40a02968e52ab9a5b9d2ae93592970d64;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git sh_eth: Avoid memcpy() over-reading of ETH_SS_STATS [ Upstream commit 224004fbb033600715dbd626bceec10bfd9c58bc ] 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 Signed-off-by: Sasha Levin --- diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index dab1597287b9..36f1019809ea 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -2197,7 +2197,7 @@ 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; }