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| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2019-03-12 12:10:59 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-04 08:49:06 +0200 |
| commit | 54fa5832c0e34b734d90576ca48cc01e52942d82 (patch) | |
| tree | 3f15aa3b8b03af68c7d45b26dc7f87e4a22eec56 /net | |
| parent | aba0a087a00096c3831b6524852a972df5f5f3d9 (diff) | |
| download | linux-54fa5832c0e34b734d90576ca48cc01e52942d82.tar.gz linux-54fa5832c0e34b734d90576ca48cc01e52942d82.tar.bz2 linux-54fa5832c0e34b734d90576ca48cc01e52942d82.zip | |
netfilter: nft_set_rbtree: check for inactive element after flag mismatch
[ Upstream commit 05b7639da55f5555b9866a1f4b7e8995232a6323 ]
Otherwise, we hit bogus ENOENT when removing elements.
Fixes: e701001e7cbe ("netfilter: nft_rbtree: allow adjacent intervals with dynamic updates")
Reported-by: Václav Zindulka <vaclav.zindulka@tlapnet.cz>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/nft_set_rbtree.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/net/netfilter/nft_set_rbtree.c b/net/netfilter/nft_set_rbtree.c index 93820e0d8814..4ee8acded0a4 100644 --- a/net/netfilter/nft_set_rbtree.c +++ b/net/netfilter/nft_set_rbtree.c @@ -191,10 +191,6 @@ static void *nft_rbtree_deactivate(const struct net *net, else if (d > 0) parent = parent->rb_right; else { - if (!nft_set_elem_active(&rbe->ext, genmask)) { - parent = parent->rb_left; - continue; - } if (nft_rbtree_interval_end(rbe) && !nft_rbtree_interval_end(this)) { parent = parent->rb_left; @@ -203,6 +199,9 @@ static void *nft_rbtree_deactivate(const struct net *net, nft_rbtree_interval_end(this)) { parent = parent->rb_right; continue; + } else if (!nft_set_elem_active(&rbe->ext, genmask)) { + parent = parent->rb_left; + continue; } nft_set_elem_change_active(net, set, &rbe->ext); return rbe; |