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[TASKMGR] Fix a heap corruption bug (#4311)

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Improper adjustment of the array index in graphctl.c, introduced in PR #4141 lead to an off-by-one heap corruption.
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Valerij Zaporogeci 2022-01-25 16:49:46 +02:00 • committed by GitHub
parent 5972c0c18b
commit f8faa0b660
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base/applications/taskmgr/graphctl.c
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@ -150,7 +150,7 @@ GraphCtrl_AddPoint(PTM_GRAPH_CONTROL inst, BYTE val0, BYTE val1)
t = inst->PointBuffer; t = inst->PointBuffer;
Prev0 = *(t + inst->CurrIndex); Prev0 = *(t + inst->CurrIndex);
Prev1 = *(t + inst->CurrIndex + inst->NumberOfPoints); Prev1 = *(t + inst->CurrIndex + inst->NumberOfPoints);
if (inst->CurrIndex < inst->NumberOfPoints) if (inst->CurrIndex < inst->NumberOfPoints - 1)
{ {
inst->CurrIndex++; inst->CurrIndex++;
} }