[lwip-devel] [bug #51578] snmp: wrong value_len decoded for platforms where sizeof(u32_t) != sizeof(u32_t*)

[Simon Goldschmidt]

URL:
  <http://savannah.nongnu.org/bugs/?51578>

                 Summary: snmp: wrong value_len decoded for platforms where
sizeof(u32_t) != sizeof(u32_t*)
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: goldsimon
            Submitted on: Wed 26 Jul 2017 06:39:37 AM UTC
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: In Progress
                 Privacy: Public
             Assigned to: goldsimon
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head

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Details:

In snmp_vb_enumerator_get_next(), 'varbind->value_len' sometimes uses
'sizeof(type-pointer)' instead of 'sizeof(type)'.

This only fails for non-32 bit platforms, so most obviously, this has not been
tested on such platforms since the bug has been introduced (with 2.0.0).




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