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netfilter: nft_set_bitmap: initialize set element extension in lookups

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

Fixes: 665153ff57 ("netfilter: nf_tables: add bitmap set type")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2020-03-27 17:43:04 +01:00
parent 7c6b412162
commit 24791b9aa1
1 changed files with 1 additions and 0 deletions
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net/netfilter/nft_set_bitmap.c
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@ -81,6 +81,7 @@ static bool nft_bitmap_lookup(const struct net *net, const struct nft_set *set,
u32 idx, off; u32 idx, off;
nft_bitmap_location(set, key, &idx, &off); nft_bitmap_location(set, key, &idx, &off);
*ext = NULL;
return nft_bitmap_active(priv->bitmap, idx, off, genmask); return nft_bitmap_active(priv->bitmap, idx, off, genmask);
} }