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M17: Packet Decode Fix Sanity Check So It Doesn't Break CRC;

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lwvmobile 2024-06-15 01:18:47 -04:00
parent beefaae0fa
commit 8b883f556f
1 changed files with 4 additions and 1 deletions
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5
src/m17.c
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@ -3379,9 +3379,12 @@ void processM17PKT(dsd_opts * opts, dsd_state * state)
//sanity check to we don't go out of bounds on memcpy and total (core dump)
if (ptr > 825) ptr = 825;
if (ptr < 0) ptr = 0;
if (ptr == 0 && eot == 1) ptr = 3; //this is from a bad decode, and caused a core dump on total being a negative value
int total = ptr + counter - 3; //-3 if changes to M17_Implementations are made
//sanity check on total
if (total < 0 && eot == 1) total = 0; //this is from a bad decode, and caused a core dump on total being a negative value
int end = ptr + 25;
//TODO: Fix this