From 9a7b5b50de8a764671ba1800fe4c52d3b7013901 Mon Sep 17 00:00:00 2001 From: Sabrina Dubroca Date: Wed, 22 Apr 2020 17:29:51 +0200 Subject: [PATCH] geneve: use the correct nlattr array in NL_SET_ERR_MSG_ATTR IFLA_GENEVE_* attributes are in the data array, which is correctly used when fetching the value, but not when setting the extended ack. Because IFLA_GENEVE_MAX < IFLA_MAX, we avoid out of bounds array accesses, but we don't provide a pointer to the invalid attribute to userspace. Fixes: a025fb5f49ad ("geneve: Allow configuration of DF behaviour") Signed-off-by: Sabrina Dubroca Signed-off-by: David S. Miller --- drivers/net/geneve.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index 09f279c0182b..6b461be1820b 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -1207,7 +1207,7 @@ static int geneve_validate(struct nlattr *tb[], struct nlattr *data[], enum ifla_geneve_df df = nla_get_u8(data[IFLA_GENEVE_DF]); if (df < 0 || df > GENEVE_DF_MAX) { - NL_SET_ERR_MSG_ATTR(extack, tb[IFLA_GENEVE_DF], + NL_SET_ERR_MSG_ATTR(extack, data[IFLA_GENEVE_DF], "Invalid DF attribute"); return -EINVAL; }