diff options
| author |   Benoît Ganne <bganne@cisco.com> | 2019-07-10 15:40:33 +0200 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2019-07-10 19:07:53 +0000 |
| commit | adbaf7bc2e301e591d63fae47f0a9bbb1577494e (patch) | |
| tree | 2103281466594b7954982966b208995c6a05f1b3 /src/vnet/ethernet/arp.c | |
| parent | 6a3a4f7340bdc687814d7905ef1e4ca1a3b02d57 (diff) | |
ip: fix show ip neigh vector read overflow
Both format_ethernet_arp_ip4_entry() and format_ip6_neighbor_ip6_entry()
used %s to format flags which is a vector and not a null-terminated
C-string.
Introduce format_ip_neighbor_flags() instead.
Type: fix
Fixes: 102ec52bc4
Change-Id: I0c9349fefbeb76471933de358acceb50512a21aa
Signed-off-by: Benoît Ganne <bganne@cisco.com>
Diffstat (limited to 'src/vnet/ethernet/arp.c')
| -rw-r--r-- | src/vnet/ethernet/arp.c | 25 |
1 files changed, 6 insertions, 19 deletions
diff --git a/src/vnet/ethernet/arp.c b/src/vnet/ethernet/arp.c index c7e27ffbae7..edf7656f1cb 100644 --- a/src/vnet/ethernet/arp.c +++ b/src/vnet/ethernet/arp.c @@ -264,7 +264,6 @@ format_ethernet_arp_ip4_entry (u8 * s, va_list * va) vnet_main_t *vnm = va_arg (*va, vnet_main_t *); ethernet_arp_ip4_entry_t *e = va_arg (*va, ethernet_arp_ip4_entry_t *); vnet_sw_interface_t *si; - u8 *flags = 0; if (!e) return format (s, "%=12s%=16s%=6s%=20s%=24s", "Time", "IP4", @@ -272,24 +271,12 @@ format_ethernet_arp_ip4_entry (u8 * s, va_list * va) si = vnet_get_sw_interface (vnm, e->sw_if_index); - if (e->flags & IP_NEIGHBOR_FLAG_STATIC) - flags = format (flags, "S"); - - if (e->flags & IP_NEIGHBOR_FLAG_DYNAMIC) - flags = format (flags, "D"); - - if (e->flags & IP_NEIGHBOR_FLAG_NO_FIB_ENTRY) - flags = format (flags, "N"); - - s = format (s, "%=12U%=16U%=6s%=20U%U", - format_vlib_time, vnm->vlib_main, e->time_last_updated, - format_ip4_address, &e->ip4_address, - flags ? (char *) flags : "", - format_mac_address_t, &e->mac, - format_vnet_sw_interface_name, vnm, si); - - vec_free (flags); - return s; + return format (s, "%=12U%=16U%=6U%=20U%U", + format_vlib_time, vnm->vlib_main, e->time_last_updated, + format_ip4_address, &e->ip4_address, + format_ip_neighbor_flags, e->flags, + format_mac_address_t, &e->mac, + format_vnet_sw_interface_name, vnm, si); } typedef struct |