diff options
| author | Bruce M Simpson <bms@FreeBSD.org> | 2003-09-23 16:54:39 +0000 |
|---|---|---|
| committer | Bruce M Simpson <bms@FreeBSD.org> | 2003-09-23 16:54:39 +0000 |
| commit | 86b3a2088e55810222fb765837135fd098a9b936 (patch) | |
| tree | f834664aedd6bc7a6029a20dd2cbae8da0867cd2 | |
| parent | a3fd61e4f548f156e9b3750877a3a98a1b7e3fc9 (diff) | |
Notes
| -rw-r--r-- | UPDATING | 5 | ||||
| -rw-r--r-- | sys/conf/newvers.sh | 2 | ||||
| -rw-r--r-- | sys/netinet/if_ether.c | 20 |
3 files changed, 20 insertions, 7 deletions
@@ -16,6 +16,11 @@ minimal number of processes, if possible, for that patch. For those updates that don't have an advisory, or to be safe, you can do a full build and install as described in the COMMON ITEMS section. +20030923: p39 FreeBSD-SA-03:14.arp + Fix a bug in arplookup(), whereby a hostile party on a locally + attached network could exhaust kernel memory, and cause a system + panic, by sending a flood of spoofed ARP requests. + 20030917: p38 FreeBSD-SA-03:13.sendmail Fix another address parsing buffer overflow. diff --git a/sys/conf/newvers.sh b/sys/conf/newvers.sh index f8ec3304a08d..72ff4fabbe38 100644 --- a/sys/conf/newvers.sh +++ b/sys/conf/newvers.sh @@ -36,7 +36,7 @@ TYPE="FreeBSD" REVISION="4.3" -BRANCH="RELEASE-p38" +BRANCH="RELEASE-p39" RELEASE="${REVISION}-${BRANCH}" VERSION="${TYPE} ${RELEASE}" diff --git a/sys/netinet/if_ether.c b/sys/netinet/if_ether.c index 33f83866dd77..947c7094d230 100644 --- a/sys/netinet/if_ether.c +++ b/sys/netinet/if_ether.c @@ -787,12 +787,20 @@ arplookup(addr, create, proxy) else if (rt->rt_gateway->sa_family != AF_LINK) why = "gateway route is not ours"; - if (why && create) { - log(LOG_DEBUG, "arplookup %s failed: %s\n", - inet_ntoa(sin.sin_addr), why); - return 0; - } else if (why) { - return 0; + if (why) { + if (create) + log(LOG_DEBUG, "arplookup %s failed: %s\n", + inet_ntoa(sin.sin_addr), why); + + /* If there are no references to this route, purge it */ + if (rt->rt_refcnt <= 0 && + (rt->rt_flags & RTF_WASCLONED) != RTF_WASCLONED) { + rtrequest(RTM_DELETE, + (struct sockaddr *)rt_key(rt), + rt->rt_gateway, rt_mask(rt), + rt->rt_flags, 0); + } + return (0); } return ((struct llinfo_arp *)rt->rt_llinfo); } |