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src: fix crash in GetErrorSource() for invalid using syntax #62770

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src: fix crash in GetErrorSource() for invalid using syntax #62770

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89b1cf8
src: fix crash in GetErrorSource() for invalid using syntax
semimikoh Apr 16, 2026
50e788d
fixup! src: fix crash in GetErrorSource() for invalid using syntax
semimikoh Apr 18, 2026
81a0a95
Merge upstream/main into fix-geterrorsource-crash
semimikoh Apr 19, 2026
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6 changes: 2 additions & 4 deletions src/node_errors.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -150,8 +150,7 @@ static std::string GetErrorSource(Isolate* isolate,
: 0;
int start = message->GetStartColumn(context).FromMaybe(0);
int end = message->GetEndColumn(context).FromMaybe(0);
if (start >= script_start) {
CHECK_GE(end, start);

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if (start >= script_start && end >= script_start) {
start -= script_start;
end -= script_start;
}
Expand All @@ -161,8 +160,7 @@ static std::string GetErrorSource(Isolate* isolate,
CHECK_GT(buf.size(), 0);
*added_exception_line = true;

if (start > end ||
start < 0 ||
if (start > end || start < 0 || end < 0 ||
static_cast<size_t>(end) > sourceline.size()) {
return buf;
}
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