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GP-2477_James_prevent_large_scalar_conversions

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James 2022-08-18 18:46:47 +00:00
parent 62c0e444a5
commit e8bda10bc1
1 changed files with 3 additions and 1 deletions
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4
Ghidra/Features/Decompiler/src/main/java/ghidra/app/plugin/core/decompile/actions/ConvertConstantAction.java
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@ -51,6 +51,8 @@ public abstract class ConvertConstantAction extends AbstractDecompilerAction {
* that corresponds with the selected constant in the decompiler window. * that corresponds with the selected constant in the decompiler window.
*/ */
private final static int MAX_INSTRUCTION_WINDOW = 20; private final static int MAX_INSTRUCTION_WINDOW = 20;
private static final int MAX_SCALAR_SIZE = 8;
protected DecompilePlugin plugin; protected DecompilePlugin plugin;
private FontMetrics metrics = null; private FontMetrics metrics = null;
private int convertType; // The EquateSymbol conversion type performed by the action private int convertType; // The EquateSymbol conversion type performed by the action
@ -209,7 +211,7 @@ public abstract class ConvertConstantAction extends AbstractDecompilerAction {
return null; return null;
} }
Varnode convertVn = tokenAtCursor.getVarnode(); Varnode convertVn = tokenAtCursor.getVarnode();
if (convertVn == null || !convertVn.isConstant()) { if (convertVn == null || !convertVn.isConstant() || convertVn.getSize() > MAX_SCALAR_SIZE) {
return null; return null;
} }
HighSymbol symbol = convertVn.getHigh().getSymbol(); HighSymbol symbol = convertVn.getHigh().getSymbol();