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fib: fix use-after-free for interface adj removal
71/22771/2
author
Benoît Ganne
<bganne@cisco.com>
Wed, 16 Oct 2019 13:08:37 +0000
(15:08 +0200)
committer
Neale Ranns
<nranns@cisco.com>
Wed, 16 Oct 2019 15:19:46 +0000
(15:19 +0000)
Type: fix
Change-Id: I82308e368d14d84f5970dad229bdcf2de7d1839d
Signed-off-by: Benoît Ganne <bganne@cisco.com>
src/vnet/adj/adj_nbr.c
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diff --git
a/src/vnet/adj/adj_nbr.c
b/src/vnet/adj/adj_nbr.c
index
cbd6691
..
7f053c8
100644
(file)
--- 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);
}