diff options
Diffstat (limited to 'usr.sbin/route6d')
-rw-r--r-- | usr.sbin/route6d/route6d.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/usr.sbin/route6d/route6d.c b/usr.sbin/route6d/route6d.c index 9a2507b..0229770 100644 --- a/usr.sbin/route6d/route6d.c +++ b/usr.sbin/route6d/route6d.c @@ -3049,13 +3049,14 @@ void filterconfig() { int i; - char *p, *ap, *iflp, *ifname; + char *p, *ap, *iflp, *ifname, *ep; struct iff ftmp, *iff_obj; struct ifc *ifcp; struct riprt *rrt; #if 0 struct in6_addr gw; #endif + u_long plen; for (i = 0; i < nfilter; i++) { ap = filter[i]; @@ -3078,7 +3079,14 @@ filterconfig() fatal("invalid prefix specified for '%s'", ap); /*NOTREACHED*/ } - ftmp.iff_plen = atoi(p); + errno = 0; + ep = NULL; + plen = strtoul(p, &ep, 10); + if (errno || !*p || *ep || plen > sizeof(ftmp.iff_addr) * 8) { + fatal("invalid prefix length specified for '%s'", ap); + /*NOTREACHED*/ + } + ftmp.iff_plen = plen; ftmp.iff_next = NULL; applyplen(&ftmp.iff_addr, ftmp.iff_plen); ifonly: |