Author: marius Date: Sun Apr 23 21:17:59 2017 New Revision: 317343 URL: https://svnweb.freebsd.org/changeset/base/317343
Log: In fill_ip6(), the value of the pointer av changes before it is free(3)ed. Thus, introduce a new variable to track the original value. Submitted by: Tom Rix Differential Revision: https://reviews.freebsd.org/D9962 Modified: head/sbin/ipfw/ipv6.c Modified: head/sbin/ipfw/ipv6.c ============================================================================== --- head/sbin/ipfw/ipv6.c Sun Apr 23 20:32:46 2017 (r317342) +++ head/sbin/ipfw/ipv6.c Sun Apr 23 21:17:59 2017 (r317343) @@ -339,6 +339,7 @@ fill_ip6(ipfw_insn_ip6 *cmd, char *av, i { int len = 0; struct in6_addr *d = &(cmd->addr6); + char *oav; /* * Needed for multiple address. * Note d[1] points to struct in6_add r mask6 of cmd @@ -365,7 +366,7 @@ fill_ip6(ipfw_insn_ip6 *cmd, char *av, i return (1); } - av = strdup(av); + oav = av = strdup(av); while (av) { /* * After the address we can have '/' indicating a mask, @@ -446,7 +447,7 @@ fill_ip6(ipfw_insn_ip6 *cmd, char *av, i if (len + 1 > F_LEN_MASK) errx(EX_DATAERR, "address list too long"); cmd->o.len |= len+1; - free(av); + free(oav); return (1); } _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
