From: Sishuai Gong <sishuai.system@gmail.com>
To: marcelo.leitner@gmail.com, lucien.xin@gmail.com
Cc: linux-sctp@vger.kernel.org
Subject: Racy addr->valid in sctp_inet6addr_event() and sctp_copy_laddrs()
Date: Tue, 8 Aug 2023 15:07:08 -0400 [thread overview]
Message-ID: <72339335-4072-429C-9494-ACCDC5572F54@gmail.com> (raw)
Hello,
We observed a data race over addr->valid between sctp_inet6addr_event() and
sctp_copy_laddrs(). Under the following execution order, sctp_copy_laddrs()
might copy the addr that is no longer valid.
sctp_copy_laddrs() sctp_inet6addr_event()
if (!addr->valid)
continue;
addr->valid = 0;
memcpy(&temp, &addr->a, sizeof(temp));
Thanks
next reply other threads:[~2023-08-08 19:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-08 19:07 Sishuai Gong [this message]
2023-08-09 16:26 ` Racy addr->valid in sctp_inet6addr_event() and sctp_copy_laddrs() Xin Long
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