RfidResearchGroup/proxmark3
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FIX: Coverity, out-of-bounds write, CID# 121336, s_index should take factor in consideration when looping. Not sure about this one.

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FIX: another thing struck me, the g_index wasn't increased, meaning the "un-decimation" always worked on the same first byte of GraphBuffer.
This commit is contained in:
iceman1001 2016-01-12 22:15:49 +01:00
parent 6799b19374
commit 1d42f25fcd
1 changed files with 6 additions and 5 deletions
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3
client/cmddata.c
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@ -831,12 +831,13 @@ int CmdUndec(const char *Cmd)
//We have memory, don't we?
int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
uint32_t g_index = 0 ,s_index = 0;
while(g_index < GraphTraceLen && s_index < MAX_GRAPH_TRACE_LEN)
while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN)
{
int count = 0;
for (count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++)
swap[s_index+count] = GraphBuffer[g_index];
s_index += count;
g_index++;
}
memcpy(GraphBuffer, swap, s_index * sizeof(int));