src: fix potential segmentation fault in SQLite #53850
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The Local<Value> returned from ColumnToValue() and ColumnNameToValue() may be empty (if a JavaScript exception is pending), in which case a segmentation fault may occur at the call sites, which do not check if the Local<Value> is empty. Fix this bug returning early if an exception is pending (as indicated by the Local being empty). In the long term, these functions should return MaybeLocal instead of Local, but this patch is supposed to be a minimal bug fix only.
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| if (key.IsEmpty()) return; | ||
| Local<Value> val = stmt->ColumnToValue(i); | ||
| if (val.IsEmpty()) return; |
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nit... is it worth combining these into a single if (key.IsEmpty() || val.IsEmpty()) return just to make things a bit more compact?
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We usually fail fast when a JavaScript exception is pending to avoid unsafe calls into JavaScript in that state. It seems that ColumnToValue() does not call into JavaScript, but unless someone feels strongly, I'd err on the side of caution here.
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The Local<Value> returned from ColumnToValue() and ColumnNameToValue() may be empty (if a JavaScript exception is pending), in which case a segmentation fault may occur at the call sites, which do not check if the Local<Value> is empty. Fix this bug returning early if an exception is pending (as indicated by the Local being empty). In the long term, these functions should return MaybeLocal instead of Local, but this patch is supposed to be a minimal bug fix only. PR-URL: nodejs#53850 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
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The Local<Value> returned from ColumnToValue() and ColumnNameToValue() may be empty (if a JavaScript exception is pending), in which case a segmentation fault may occur at the call sites, which do not check if the Local<Value> is empty. Fix this bug returning early if an exception is pending (as indicated by the Local being empty). In the long term, these functions should return MaybeLocal instead of Local, but this patch is supposed to be a minimal bug fix only. PR-URL: #53850 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
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The
Local<Value>returned fromColumnToValue()andColumnNameToValue()may be empty (if a JavaScript exception is pending), in which case a segmentation fault may occur at the call sites, which do not check if theLocal<Value>is empty. Fix this bug by returning early if an exception is pending (as indicated by theLocalbeing empty).In the long term, these functions should return
MaybeLocalinstead ofLocal, but this patch is supposed to be a minimal bug fix only.