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author | Xin Long <lucien.xin@gmail.com> | 2018-05-10 17:34:13 +0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-19 10:20:25 +0200 |
commit | 4dce9afc2d352a805030c514c5e22b83fa4a980f (patch) | |
tree | 9677fc386f7080bbc4f63f4396242990a0816d12 /virt | |
parent | d3d4d69d9bbd497a051cf73ce8b4c73444d157f5 (diff) |
sctp: remove sctp_chunk_put from fail_mark err path in sctp_ulpevent_make_rcvmsg
[ Upstream commit 6910e25de2257e2c82c7a2d126e3463cd8e50810 ]
In Commit 1f45f78f8e51 ("sctp: allow GSO frags to access the chunk too"),
it held the chunk in sctp_ulpevent_make_rcvmsg to access it safely later
in recvmsg. However, it also added sctp_chunk_put in fail_mark err path,
which is only triggered before holding the chunk.
syzbot reported a use-after-free crash happened on this err path, where
it shouldn't call sctp_chunk_put.
This patch simply removes this call.
Fixes: 1f45f78f8e51 ("sctp: allow GSO frags to access the chunk too")
Reported-by: syzbot+141d898c5f24489db4aa@syzkaller.appspotmail.com
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions