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[lwip-devel] [bug #57526] Fix the dns entries pcb_idx range

From: Simon Goldschmidt
Subject: [lwip-devel] [bug #57526] Fix the dns entries pcb_idx range
Date: Thu, 9 Jan 2020 15:09:02 -0500 (EST)
User-agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36

Update of bug #57526 (project lwip):

                  Status:                    None => Invalid                
             Assigned to:                    None => goldsimon              
             Open/Closed:                    Open => Closed                 


Follow-up Comment #1:

I take it this is from reading the code only. Let me explain:
- dns_send() is called for DNS_STATE_NEW and DNS_STATE_ASKING only
- pcb_idx is set to DNS_MAX_SOURCE_PORTS only when the table entry is set to

Being like that, this cannot happen. I'll add an assert anyway, but no, it
currently cannot cause table reading out of range.


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