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Fix null deref in aeg command ##crash

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* Reproducible via 'r2 -a x86 -c 'wa shl rcx,4;ao;aeg' -
This commit is contained in:
pancake 2023-02-08 20:28:38 +01:00
parent b7e0c43b1d
commit 949544b66e
1 changed files with 6 additions and 2 deletions
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8
libr/anal/esil_dfg.c
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@ -819,8 +819,12 @@ static bool edf_consume_2_push_1(REsil *esil) {
const_result &= true;
} else {
src_node[i] = _edf_var_get (edf, src[i]);
RAnalEsilDFGNode *ec_node = (RAnalEsilDFGNode *)src_node[i]->data;
const_result &= !!(ec_node->type & R_ANAL_ESIL_DFG_TAG_CONST);
if (src_node[i]) {
RAnalEsilDFGNode *ec_node = (RAnalEsilDFGNode *)src_node[i]->data;
const_result &= !!(ec_node->type & R_ANAL_ESIL_DFG_TAG_CONST);
} else {
R_LOG_WARN ("Invalid node");
}
}
r_graph_add_edge (edf->flow, src_node[i], op_node);
}