[SRU][F:linux-bluefield][PATCH v1 2/3] netfilter: nft_set_bitmap: initialize set element extension in lookups

[Bodong Wang]

From: Pablo Neira Ayuso <pablo at netfilter.org>

BugLink: https://bugs.launchpad.net/bugs/2006397

Otherwise, nft_lookup might dereference an uninitialized pointer to the
element extension.

Fixes: 665153ff5752 ("netfilter: nf_tables: add bitmap set type")
Signed-off-by: Pablo Neira Ayuso <pablo at netfilter.org>
(cherry picked from commit 24791b9aa1ab09818617ff384876930e09ada0a3)
Signed-off-by: Bodong Wang <bodong at nvidia.com>
---
 net/netfilter/nft_set_bitmap.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/netfilter/nft_set_bitmap.c b/net/netfilter/nft_set_bitmap.c
index 1cb2e67..6829a49 100644
--- a/net/netfilter/nft_set_bitmap.c
+++ b/net/netfilter/nft_set_bitmap.c
@@ -81,6 +81,7 @@ static bool nft_bitmap_lookup(const struct net *net, const struct nft_set *set,
 	u32 idx, off;
 
 	nft_bitmap_location(set, key, &idx, &off);
+	*ext = NULL;
 
 	return nft_bitmap_active(priv->bitmap, idx, off, genmask);
 }
-- 
1.8.3.1