diff options
| author | Eric Dumazet <edumazet@google.com> | 2017-05-09 06:29:19 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-07 12:05:56 +0200 |
| commit | 5f67a1663c03a73962fb240cf821338f78981a23 (patch) | |
| tree | 01042b1b228fca6bcfb06fdcca74a35f7c0ed5d9 /net/ipv6/tcp_ipv6.c | |
| parent | b9978c27454cca3a0ba73577c23c15401d30e833 (diff) | |
dccp/tcp: do not inherit mc_list from parent
[ Upstream commit 657831ffc38e30092a2d5f03d385d710eb88b09a ]
syzkaller found a way to trigger double frees from ip_mc_drop_socket()
It turns out that leave a copy of parent mc_list at accept() time,
which is very bad.
Very similar to commit 8b485ce69876 ("tcp: do not inherit
fastopen_req from parent")
Initial report from Pray3r, completed by Andrey one.
Thanks a lot to them !
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Pray3r <pray3r.z@gmail.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')
0 files changed, 0 insertions, 0 deletions