Backport patches to fix build error with --disable-ospfapi and
CVE-2022-37035.

Signed-off-by: Yi Zhao <yi.zhao@...>
---
...fy-race-between-io-and-main-pthreads.patch | 151 ++++++++++++++++++
...for-readline-function-instead-of-mai.patch | 4 +-
...UPPORT_OSPF_API-define-in-ospf_spf.c.patch | 48 ++++++
.../frr/{frr_8.2.2.bb => frr_8.3.1.bb} | 6 +-
4 files changed, 206 insertions(+), 3 deletions(-)
create mode 100644 meta-networking/recipes-protocols/frr/frr/0001-bgpd-avoid-notify-race-between-io-and-main-pthreads.patch
create mode 100644 meta-networking/recipes-protocols/frr/frr/0001-ospfd-Adding-SUPPORT_OSPF_API-define-in-ospf_spf.c.patch
rename meta-networking/recipes-protocols/frr/{frr_8.2.2.bb => frr_8.3.1.bb} (95%)

diff --git a/meta-networking/recipes-protocols/frr/frr/0001-bgpd-avoid-notify-race-between-io-and-main-pthreads.patch b/meta-networking/recipes-protocols/frr/frr/0001-bgpd-avoid-notify-race-between-io-and-main-pthreads.patch
new file mode 100644
index 000000000..40284d6f4
--- /dev/null
+++ b/meta-networking/recipes-protocols/frr/frr/0001-bgpd-avoid-notify-race-between-io-and-main-pthreads.patch
@@ -0,0 +1,151 @@
+From 71ca5b09bc71e8cbe38177cf41e83fe164e52eee Mon Sep 17 00:00:00 2001
+From: Mark Stapp <mstapp@...>
+Date: Thu, 8 Sep 2022 16:14:36 -0400
+Subject: [PATCH] bgpd: avoid notify race between io and main pthreads
+
+The "bgp_notify_" apis in bgp_packet.c generate a notification
+to a peer, usually during error handling. The io pthread wants
+to send notifications in a couple of cases during early
+received-packet validation - but the existing api interacts
+with the peer struct itself, and that's not safe.
+
+Add a new api for use by the io pthread, and adjust the main
+notify api so that it can avoid touching the peer struct.
+
+Signed-off-by: Mark Stapp <mstapp@...>
+
+CVE: CVE-2022-37035
+
+Upstream-Status: Backport
+[https://github.com/FRRouting/frr/commit/71ca5b09bc71e8cbe38177cf41e83fe164e52eee]
+
+Signed-off-by: Yi Zhao <yi.zhao@...>
+---
+ bgpd/bgp_io.c | 17 ++++++++---------
+ bgpd/bgp_packet.c | 32 ++++++++++++++++++++++++++++----
+ bgpd/bgp_packet.h | 2 ++
+ 3 files changed, 38 insertions(+), 13 deletions(-)
+
+diff --git a/bgpd/bgp_io.c b/bgpd/bgp_io.c
+index 7af1fae28..f9bb8d518 100644
+--- a/bgpd/bgp_io.c
++++ b/bgpd/bgp_io.c
+@@ -37,7 +37,7 @@
+ #include "bgpd/bgp_debug.h" // for bgp_debug_neighbor_events, bgp_type_str
+ #include "bgpd/bgp_errors.h" // for expanded error reference information
+ #include "bgpd/bgp_fsm.h" // for BGP_EVENT_ADD, bgp_event
+-#include "bgpd/bgp_packet.h" // for bgp_notify_send_with_data, bgp_notify...
++#include "bgpd/bgp_packet.h" // for bgp_notify_io_invalid...
+ #include "bgpd/bgp_trace.h" // for frrtraces
+ #include "bgpd/bgpd.h" // for peer, BGP_MARKER_SIZE, bgp_master, bm
+ /* clang-format on */
+@@ -526,8 +526,8 @@ static bool validate_header(struct peer *peer)
+ return false;
+
+ if (memcmp(m_correct, m_rx, BGP_MARKER_SIZE) != 0) {
+- bgp_notify_send(peer, BGP_NOTIFY_HEADER_ERR,
+- BGP_NOTIFY_HEADER_NOT_SYNC);
++ bgp_notify_io_invalid(peer, BGP_NOTIFY_HEADER_ERR,
++ BGP_NOTIFY_HEADER_NOT_SYNC, NULL, 0);
+ return false;
+ }
+
+@@ -547,9 +547,8 @@ static bool validate_header(struct peer *peer)
+ zlog_debug("%s unknown message type 0x%02x", peer->host,
+ type);
+
+- bgp_notify_send_with_data(peer, BGP_NOTIFY_HEADER_ERR,
+- BGP_NOTIFY_HEADER_BAD_MESTYPE, &type,
+- 1);
++ bgp_notify_io_invalid(peer, BGP_NOTIFY_HEADER_ERR,
++ BGP_NOTIFY_HEADER_BAD_MESTYPE, &type, 1);
+ return false;
+ }
+
+@@ -574,9 +573,9 @@ static bool validate_header(struct peer *peer)
+
+ uint16_t nsize = htons(size);
+
+- bgp_notify_send_with_data(peer, BGP_NOTIFY_HEADER_ERR,
+- BGP_NOTIFY_HEADER_BAD_MESLEN,
+- (unsigned char *)&nsize, 2);
++ bgp_notify_io_invalid(peer, BGP_NOTIFY_HEADER_ERR,
++ BGP_NOTIFY_HEADER_BAD_MESLEN,
++ (unsigned char *)&nsize, 2);
+ return false;
+ }
+
+diff --git a/bgpd/bgp_packet.c b/bgpd/bgp_packet.c
+index 7daac4494..90695219a 100644
+--- a/bgpd/bgp_packet.c
++++ b/bgpd/bgp_packet.c
+@@ -871,8 +871,9 @@ bool bgp_notify_received_hard_reset(struct peer *peer, uint8_t code,
+ * @param data Data portion
+ * @param datalen length of data portion
+ */
+-void bgp_notify_send_with_data(struct peer *peer, uint8_t code,
+- uint8_t sub_code, uint8_t *data, size_t datalen)
++static void bgp_notify_send_internal(struct peer *peer, uint8_t code,
++ uint8_t sub_code, uint8_t *data,
++ size_t datalen, bool use_curr)
+ {
+ struct stream *s;
+ bool hard_reset = bgp_notify_send_hard_reset(peer, code, sub_code);
+@@ -917,8 +918,11 @@ void bgp_notify_send_with_data(struct peer *peer, uint8_t code,
+ * If possible, store last packet for debugging purposes. This check is
+ * in place because we are sometimes called with a doppelganger peer,
+ * who tends to have a plethora of fields nulled out.
++ *
++ * Some callers should not attempt this - the io pthread for example
++ * should not touch internals of the peer struct.
+ */
+- if (peer->curr) {
++ if (use_curr && peer->curr) {
+ size_t packetsize = stream_get_endp(peer->curr);
+ assert(packetsize <= peer->max_packet_size);
+ memcpy(peer->last_reset_cause, peer->curr->data, packetsize);
+@@ -1001,7 +1005,27 @@ void bgp_notify_send_with_data(struct peer *peer, uint8_t code,
+ */
+ void bgp_notify_send(struct peer *peer, uint8_t code, uint8_t sub_code)
+ {
+- bgp_notify_send_with_data(peer, code, sub_code, NULL, 0);
++ bgp_notify_send_internal(peer, code, sub_code, NULL, 0, true);
++}
++
++/*
++ * Enqueue notification; called from the main pthread, peer object access is ok.
++ */
++void bgp_notify_send_with_data(struct peer *peer, uint8_t code,
++ uint8_t sub_code, uint8_t *data, size_t datalen)
++{
++ bgp_notify_send_internal(peer, code, sub_code, data, datalen, true);
++}
++
++/*
++ * For use by the io pthread, queueing a notification but avoiding access to
++ * the peer object.
++ */
++void bgp_notify_io_invalid(struct peer *peer, uint8_t code, uint8_t sub_code,
++ uint8_t *data, size_t datalen)
++{
++ /* Avoid touching the peer object */
++ bgp_notify_send_internal(peer, code, sub_code, data, datalen, false);
+ }
+
+ /*
+diff --git a/bgpd/bgp_packet.h b/bgpd/bgp_packet.h
+index a0eb579db..9f6d772bc 100644
+--- a/bgpd/bgp_packet.h
++++ b/bgpd/bgp_packet.h
+@@ -62,6 +62,8 @@ extern void bgp_open_send(struct peer *);
+ extern void bgp_notify_send(struct peer *, uint8_t, uint8_t);
+ extern void bgp_notify_send_with_data(struct peer *, uint8_t, uint8_t,
+ uint8_t *, size_t);
++void bgp_notify_io_invalid(struct peer *peer, uint8_t code, uint8_t sub_code,
++ uint8_t *data, size_t datalen);
+ extern void bgp_route_refresh_send(struct peer *peer, afi_t afi, safi_t safi,
+ uint8_t orf_type, uint8_t when_to_refresh,
+ int remove, uint8_t subtype);
+--
+2.25.1
+
diff --git a/meta-networking/recipes-protocols/frr/frr/0001-configure-Check-for-readline-function-instead-of-mai.patch b/meta-networking/recipes-protocols/frr/frr/0001-configure-Check-for-readline-function-instead-of-mai.patch
index 4b218a61e..20e847223 100644
--- a/meta-networking/recipes-protocols/frr/frr/0001-configure-Check-for-readline-function-instead-of-mai.patch
+++ b/meta-networking/recipes-protocols/frr/frr/0001-configure-Check-for-readline-function-instead-of-mai.patch
@@ -6,7 +6,9 @@ Subject: [PATCH] configure: Check for readline() function instead of main
main is not a function found in libreadline, its better to check for a
function thats provided by it.
-Upstream-Status: Submitted [https://github.com/FRRouting/frr/pull/11893]
+Upstream-Status: Backport
+[https://github.com/FRRouting/frr/commit/9399d58c13257849179d3c2b3698a2b43bc1b2a0]
+
Signed-off-by: Khem Raj <raj.khem@...>
---
configure.ac | 2 +-
diff --git a/meta-networking/recipes-protocols/frr/frr/0001-ospfd-Adding-SUPPORT_OSPF_API-define-in-ospf_spf.c.patch b/meta-networking/recipes-protocols/frr/frr/0001-ospfd-Adding-SUPPORT_OSPF_API-define-in-ospf_spf.c.patch
new file mode 100644
index 000000000..09988946b
--- /dev/null
+++ b/meta-networking/recipes-protocols/frr/frr/0001-ospfd-Adding-SUPPORT_OSPF_API-define-in-ospf_spf.c.patch
@@ -0,0 +1,48 @@
+From ec3bb054c331f9d928ac21a1747e0f921b51dfbc Mon Sep 17 00:00:00 2001
+From: Michal Ruprich <michalruprich@...>
+Date: Tue, 6 Sep 2022 12:25:01 +0200
+Subject: [PATCH] ospfd: Adding SUPPORT_OSPF_API define in ospf_spf.c
+
+It is not possible to build ospf_spf.c file with --disable-ospfapi because
+ospf_apiserver.c has SUPPORT_OSPF_API around all function definitions and
+that results in an undefined reference to the ospf_apiserver_notify_reachable
+function error while building.
+
+Signed-off-by: Michal Ruprich <mruprich@...>
+
+Upstream-Status: Backport
+[https://github.com/FRRouting/frr/commit/ec3bb054c331f9d928ac21a1747e0f921b51dfbc]
+
+Signed-off-by: Yi Zhao <yi.zhao@...>
+---
+ ospfd/ospf_spf.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/ospfd/ospf_spf.c b/ospfd/ospf_spf.c
+index 46492ff6b..4edc1de81 100644
+--- a/ospfd/ospf_spf.c
++++ b/ospfd/ospf_spf.c
+@@ -48,7 +48,10 @@
+ #include "ospfd/ospf_sr.h"
+ #include "ospfd/ospf_ti_lfa.h"
+ #include "ospfd/ospf_errors.h"
++
++#ifdef SUPPORT_OSPF_API
+ #include "ospfd/ospf_apiserver.h"
++#endif
+
+ /* Variables to ensure a SPF scheduled log message is printed only once */
+
+@@ -1895,7 +1898,9 @@ static void ospf_spf_calculate_schedule_worker(struct thread *thread)
+ /* Update all routers routing table */
+ ospf->oall_rtrs = ospf->all_rtrs;
+ ospf->all_rtrs = all_rtrs;
++#ifdef SUPPORT_OSPF_API
+ ospf_apiserver_notify_reachable(ospf->oall_rtrs, ospf->all_rtrs);
++#endif
+
+ /* Free old ABR/ASBR routing table */
+ if (ospf->old_rtrs)
+--
+2.25.1
+
diff --git a/meta-networking/recipes-protocols/frr/frr_8.2.2.bb b/meta-networking/recipes-protocols/frr/frr_8.3.1.bb
similarity index 95%
rename from meta-networking/recipes-protocols/frr/frr_8.2.2.bb
rename to meta-networking/recipes-protocols/frr/frr_8.3.1.bb
index 607ed8b9d..c69720e6f 100644
--- a/meta-networking/recipes-protocols/frr/frr_8.2.2.bb
+++ b/meta-networking/recipes-protocols/frr/frr_8.3.1.bb
@@ -9,12 +9,14 @@ LICENSE = "GPL-2.0-only & LGPL-2.1-only"
LIC_FILES_CHKSUM = "file://COPYING;md5=b234ee4d69f5fce4486a80fdaf4a4263 \
file://COPYING-LGPLv2.1;md5=4fbd65380cdd255951079008b364516c"
-SRC_URI = "git://github.com/FRRouting/frr.git;protocol=https;branch=stable/8.2 \
+SRC_URI = "git://github.com/FRRouting/frr.git;protocol=https;branch=stable/8.3 \
file://0001-configure-Check-for-readline-function-instead-of-mai.patch \
+ file://0001-ospfd-Adding-SUPPORT_OSPF_API-define-in-ospf_spf.c.patch \
+ file://0001-bgpd-avoid-notify-race-between-io-and-main-pthreads.patch \
file://frr.pam \
"
-SRCREV = "79188bf710e92acf42fb5b9b0a2e9593a5ee9b05"
+SRCREV = "a74f7a9ad9623e6f9654fe4a7177e5da0b194828"
S = "${WORKDIR}/git"