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[ipfw] Fix memory leak when parsing ipv6

This commit is contained in:
mitmitmitm 2023-09-27 12:29:18 +02:00 committed by Sukchan Lee
parent 445bf26ef2
commit d54a28ed6c
1 changed files with 3 additions and 2 deletions
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5
lib/ipfw/ipv6.c
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@ -338,6 +338,7 @@ fill_ip6(ipfw_insn_ip6 *cmd, char *av, int cblen)
{
int len = 0;
struct in6_addr *d = &(cmd->addr6);
char *av1;
/*
* Needed for multiple address.
* Note d[1] points to struct in6_add r mask6 of cmd
@ -375,7 +376,7 @@ fill_ip6(ipfw_insn_ip6 *cmd, char *av, int cblen)
return (1);
}
av = strdup(av);
av1 = av = strdup(av);
while (av) {
/*
* After the address we can have '/' indicating a mask,
@ -451,7 +452,7 @@ fill_ip6(ipfw_insn_ip6 *cmd, char *av, int cblen)
if (len + 1 > F_LEN_MASK)
errx(EX_DATAERR, "address list too long");
cmd->o.len |= len+1;
free(av);
free(av1);
return (1);
}