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authorBenoît Ganne <bganne@cisco.com>2019-10-16 15:08:37 +0200
committerDave Barach <openvpp@barachs.net>2019-10-17 20:25:54 +0000
commitf864498309fb771f6a4ded95d72e343535570774 (patch)
tree4aed51bee148e23cb79a3169ca1dc07ffaf9bf3f /src
parent8b7faa7270f13ec7e0687a49cfc5ede3b90e9a1f (diff)
fib: fix use-after-free for interface adj removal
Type: fix Change-Id: I82308e368d14d84f5970dad229bdcf2de7d1839d Signed-off-by: Benoît Ganne <bganne@cisco.com> (cherry picked from commit 7391156ce68a81f258d65f498ec6161d694fae47)
Diffstat (limited to 'src')
-rw-r--r--src/vnet/adj/adj_nbr.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/vnet/adj/adj_nbr.c b/src/vnet/adj/adj_nbr.c
index cbd6691f78f..7f053c82d59 100644
--- a/src/vnet/adj/adj_nbr.c
+++ b/src/vnet/adj/adj_nbr.c
@@ -823,12 +823,15 @@ adj_nbr_interface_delete_one (adj_index_t ai,
};
ip_adjacency_t *adj;
+ adj_lock(ai);
+
adj = adj_get(ai);
adj->ia_flags |= ADJ_FLAG_SYNC_WALK_ACTIVE;
fib_walk_sync(FIB_NODE_TYPE_ADJ, ai, &bw_ctx);
adj->ia_flags &= ~ADJ_FLAG_SYNC_WALK_ACTIVE;
+ adj_unlock(ai);
return (ADJ_WALK_RC_CONTINUE);
}