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asn1: Fix ENOMEM NULL deref

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This commit is contained in:
Nicolas Williams
2022-01-12 17:01:56 -06:00
parent f0c46e7830
commit d88298649b
1 changed files with 3 additions and 3 deletions
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6
lib/asn1/gen_free.c
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@@ -127,14 +127,14 @@ free_type (const char *name, const Type *t, int preserve)
case TSequenceOf: {
char *n;
fprintf (codefile, "while((%s)->len){\n", name);
fprintf (codefile, "if ((%s)->val)\nwhile((%s)->len){\n", name, name);
if (asprintf (&n, "&(%s)->val[(%s)->len-1]", name, name) < 0 || n == NULL)
errx(1, "malloc");
free_type(n, t->subtype, FALSE);
fprintf(codefile,
"(%s)->len--;\n"
"}\n",
name);
"} else (%s)->len = 0;\n",
name, name);
fprintf(codefile,
"free((%s)->val);\n"
"(%s)->val = NULL;\n", name, name);