sctp: clear the transport of some out_chunk_list chunks in sctp_assoc_rm_peer

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commit df132eff46 upstream.

If a transport is removed by asconf but there still are some chunks with
this transport queuing on out_chunk_list, later an use-after-free issue
will be caused when accessing this transport from these chunks in
sctp_outq_flush().

This is an old bug, we fix it by clearing the transport of these chunks
in out_chunk_list when removing a transport in sctp_assoc_rm_peer().

Reported-by: syzbot+56a40ceee5fb35932f4d@syzkaller.appspotmail.com
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Xin Long 2018-10-29 23:10:29 +08:00 • committed by Greg Kroah-Hartman

parent 8380cbfe4e

commit cd947138e8

1 changed files with 7 additions and 3 deletions

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net/sctp/associola.c

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