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| author | Xin Long <lucien.xin@gmail.com> | 2024-09-30 23:49:51 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-10-03 13:18:29 +0300 |
| commit | 8beee4d8dee76b67c75dc91fd8185d91e845c160 (patch) | |
| tree | dfefda9ab54cee89492af09bc151d0b80d0cfc64 /drivers/net | |
| parent | c6929644c1e0d6108e57061d427eb966e1746351 (diff) | |
| download | linux-8beee4d8dee76b67c75dc91fd8185d91e845c160.tar.xz | |
sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start
In sctp_listen_start() invoked by sctp_inet_listen(), it should set the
sk_state back to CLOSED if sctp_autobind() fails due to whatever reason.
Otherwise, next time when calling sctp_inet_listen(), if sctp_sk(sk)->reuse
is already set via setsockopt(SCTP_REUSE_PORT), sctp_sk(sk)->bind_hash will
be dereferenced as sk_state is LISTENING, which causes a crash as bind_hash
is NULL.
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
RIP: 0010:sctp_inet_listen+0x7f0/0xa20 net/sctp/socket.c:8617
Call Trace:
<TASK>
__sys_listen_socket net/socket.c:1883 [inline]
__sys_listen+0x1b7/0x230 net/socket.c:1894
__do_sys_listen net/socket.c:1902 [inline]
Fixes: 5e8f3f703ae4 ("sctp: simplify sctp listening code")
Reported-by: syzbot+f4e0f821e3a3b7cee51d@syzkaller.appspotmail.com
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Link: https://patch.msgid.link/a93e655b3c153dc8945d7a812e6d8ab0d52b7aa0.1727729391.git.lucien.xin@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net')
0 files changed, 0 insertions, 0 deletions