[lwip-devel] [bug #50829] [CPPCHECK] Array index used before limits check.

[user name]

URL:
  <http://savannah.nongnu.org/bugs/?50829>

                 Summary: [CPPCHECK] Array index used before limits check.
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: username
            Submitted on: Wed 19 Apr 2017 01:58:16 AM UTC
                Category: IPv4
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head

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Details:

http://git.savannah.nongnu.org/cgit/lwip.git/tree/src/core/ipv4/dhcp.c#n1502

  while ((q != NULL) && (options[offset] != DHCP_OPTION_END) && (offset <
offset_max)) {
should be 
  while ((q != NULL) && (offset < offset_max) && (options[offset] !=
DHCP_OPTION_END)) {

See https://jira.reactos.org/browse/CORE-8978 for more info.
Sorry I can't be much more helpful, I'm only a messenger, telling about an
issue someone else found.

Patch credits should go to "Kudratov Olimjon".




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