diff options
| author | Florian Westphal <fw@strlen.de> | 2022-09-20 14:20:17 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-28 11:04:07 +0200 |
| commit | 11ebf32fde46572b0aaf3c2bdd97d923ef5a03ab (patch) | |
| tree | 562263a68ab384b307954e3678ba57ecb9236a85 | |
| parent | 6a3239f806829ab2bed7bf91df410fc0fe92949a (diff) | |
netfilter: ebtables: fix memory leak when blob is malformed
[ Upstream commit 62ce44c4fff947eebdf10bb582267e686e6835c9 ]
The bug fix was incomplete, it "replaced" crash with a memory leak.
The old code had an assignment to "ret" embedded into the conditional,
restore this.
Fixes: 7997eff82828 ("netfilter: ebtables: reject blobs that don't provide all entry points")
Reported-and-tested-by: syzbot+a24c5252f3e3ab733464@syzkaller.appspotmail.com
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | net/bridge/netfilter/ebtables.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c index ddb988c339c1..f6853fc0fcc0 100644 --- a/net/bridge/netfilter/ebtables.c +++ b/net/bridge/netfilter/ebtables.c @@ -999,8 +999,10 @@ static int do_replace_finish(struct net *net, struct ebt_replace *repl, goto free_iterate; } - if (repl->valid_hooks != t->valid_hooks) + if (repl->valid_hooks != t->valid_hooks) { + ret = -EINVAL; goto free_unlock; + } if (repl->num_counters && repl->num_counters != t->private->nentries) { ret = -EINVAL; |