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Subject: [Bug 222746] ipfw: tcpdatalen does not exactly match IPv6 packets.
Date: Wed, 04 Oct 2017 04:08:13 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222746

Tatsuki Makino <tatsuki_makino@hotmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #186874|0                           |1
        is obsolete|                            |

--- Comment #1 from Tatsuki Makino <tatsuki_makino@hotmail.com> ---
Created attachment 186894
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D186894&action=
=3Dedit
patch for CURRENT

attachment 186874 reused the variable iplen. But iplen overflows when ip6_p=
len
is greater than 65495.
The new patch does not use the sum of header size and payload size.

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