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CVE-2021-30219
https://github.com/michaelforney/samurai/commit/d2af3bc375e2a77139c3a28d6128c60cd8d08655
Index: parse.c
--- parse.c.orig
+++ parse.c
@@ -42,6 +42,8 @@ parserule(struct scanner *s, struct environment *env)
var = scanname(s);
parselet(s, &val);
ruleaddvar(r, var, val);
+ if (!val)
+ continue;
if (strcmp(var, "command") == 0)
hascommand = true;
else if (strcmp(var, "rspfile") == 0)