Author: freqlabs Date: Wed Jun 3 16:57:30 2020 New Revision: 361756 URL: https://svnweb.freebsd.org/changeset/base/361756
Log: scope6: Check for NULL afdata before dereferencing Narrows the race window with if_detach. Approved by: mav (mentor) MFC after: 3 days Sponsored by: iXsystems, Inc. Differential Revision: https://reviews.freebsd.org/D25017 Modified: head/sys/netinet6/scope6.c Modified: head/sys/netinet6/scope6.c ============================================================================== --- head/sys/netinet6/scope6.c Wed Jun 3 16:51:30 2020 (r361755) +++ head/sys/netinet6/scope6.c Wed Jun 3 16:57:30 2020 (r361756) @@ -422,6 +422,10 @@ in6_setscope(struct in6_addr *in6, struct ifnet *ifp, struct epoch_tracker et; NET_EPOCH_ENTER(et); + if (ifp->if_afinfo[AF_INET6] == NULL) { + NET_EPOCH_EXIT(et); + return (ENETDOWN); + } sid = SID(ifp); zoneid = sid->s6id_list[scope]; NET_EPOCH_EXIT(et); _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
