Guard against panic in cty.Value.LengthInt().

Signed-off-by: Cem Mergenci <[email protected]>
upbound · Dec 23, 2024 · b935e46 · b935e46
1 parent 997a60e
commit b935e46
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/internal/tags/key_value_tags.go b/internal/tags/key_value_tags.go
@@ -800,6 +800,10 @@ func GetAnyAttr(value cty.Value, attr string, shouldReturnSetElement func(string
 			return cty.NilVal, fmt.Errorf("invalid index: %s", indexStr)
 		}
 
+		if value.Type().IsListType() && (value.IsNull() || !value.IsKnown()) {
+			return cty.NilVal, fmt.Errorf("list attribute %s is unknown or null", attrName)
+		}
+
 		if index >= value.LengthInt() {
 			return cty.NilVal, fmt.Errorf("index %d out of range for attribute %s", index, attrName)
 		}