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Increase the MRT attribute buffer to MAX_EXT_PKTSIZE so it works in all cases.

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Dumping messages from peers with extended message capability would fail
since the MRT code was still limited to the old 4096byte size.

Reported by 7Asecurity
OK tb@
This commit is contained in:
claudio
2026-05-27 08:34:34 +00:00
parent 0b903cb7ba
commit 0dbbbf5036
1 changed files with 4 additions and 4 deletions
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usr.sbin/bgpd/mrt.c
+4 -4
View File
@@ -1,4 +1,4 @@
/* $OpenBSD: mrt.c,v 1.135 2026/05/07 20:35:19 claudio Exp $ */
/* $OpenBSD: mrt.c,v 1.136 2026/05/27 08:34:34 claudio Exp $ */
/*
* Copyright (c) 2003, 2004 Claudio Jeker <claudio@openbsd.org>
@@ -359,7 +359,7 @@ mrt_dump_entry_mp(struct mrt *mrt, struct prefix *p, uint16_t snum,
uint16_t len;
uint8_t aid;
if ((buf = ibuf_dynamic(0, MAX_PKTSIZE)) == NULL) {
if ((buf = ibuf_dynamic(0, MAX_EXT_PKTSIZE)) == NULL) {
log_warn("mrt_dump_entry_mp: ibuf_dynamic");
return (-1);
}
@@ -534,7 +534,7 @@ mrt_dump_entry(struct mrt *mrt, struct prefix *p, uint16_t snum,
/* only able to dump pure IPv4/IPv6 */
return (0);
if ((buf = ibuf_dynamic(0, MAX_PKTSIZE)) == NULL) {
if ((buf = ibuf_dynamic(0, MAX_EXT_PKTSIZE)) == NULL) {
log_warn("mrt_dump_entry: ibuf_dynamic");
return (-1);
}
@@ -660,7 +660,7 @@ mrt_dump_entry_v2_rib(struct rib_entry *re, struct ibuf **nb, struct ibuf **apb,
if (ibuf_add_n32(buf, p->path_id) == -1)
goto fail;
if ((tbuf = ibuf_dynamic(0, MAX_PKTSIZE)) == NULL)
if ((tbuf = ibuf_dynamic(0, MAX_EXT_PKTSIZE)) == NULL)
goto fail;
if (mrt_attr_dump(tbuf, prefix_aspath(p), prefix_communities(p),
nh, 1) == -1)