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| author | Cong Wang <xiyou.wangcong@gmail.com> | 2020-02-03 07:30:53 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-28 19:22:27 +0300 |
| commit | 829e0a0ae2dc7aaeb46f716be3f52f498de2bdd8 (patch) | |
| tree | 857bba71a68de36c8254add6f2da5386a4c5a4c9 /fs | |
| parent | 86502c68b81eb98fc0f0c6bd87cda01cb7a4cd9d (diff) | |
| download | linux-829e0a0ae2dc7aaeb46f716be3f52f498de2bdd8.tar.xz | |
netfilter: xt_hashlimit: limit the max size of hashtable
commit 8d0015a7ab76b8b1e89a3e5f5710a6e5103f2dd5 upstream.
The user-specified hashtable size is unbound, this could
easily lead to an OOM or a hung task as we hold the global
mutex while allocating and initializing the new hashtable.
Add a max value to cap both cfg->size and cfg->max, as
suggested by Florian.
Reported-and-tested-by: syzbot+adf6c6c2be1c3a718121@syzkaller.appspotmail.com
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions