From e9904990e8e70a51574e6ec6b872f3c705ec75f0 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Tue, 31 Jan 2017 16:30:02 +0000 Subject: [PATCH] sfc: fix an off-by-one compare on an array size encap_type should be checked to see if it is greater or equal to the size of array map to fix an off-by-one array size check. This fixes an array overrun read as detected by static analysis by CoverityScan, CID#1398883 ("Out-of-bounds-read") Fixes: 9b41080125176841e ("sfc: insert catch-all filters for encapsulated traffic") Signed-off-by: Colin Ian King Acked-by: Edward Cree Signed-off-by: David S. Miller --- drivers/net/ethernet/sfc/ef10.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index 8bec9383d754..0475f1831b92 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -5080,7 +5080,7 @@ static int efx_ef10_filter_insert_def(struct efx_nic *efx, /* quick bounds check (BCAST result impossible) */ BUILD_BUG_ON(EFX_EF10_BCAST != 0); - if (encap_type > ARRAY_SIZE(map) || map[encap_type] == 0) { + if (encap_type >= ARRAY_SIZE(map) || map[encap_type] == 0) { WARN_ON(1); return -EINVAL; } -- 2.20.1