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(parent: 45a4521) | patch
bpf: sockmap, synchronize_rcu before free'ing map
authorJohn Fastabend <[email protected]>
Fri, 19 Jul 2019 17:29:20 +0000 (10:29 -0700)
committerDaniel Borkmann <[email protected]>
Mon, 22 Jul 2019 14:04:17 +0000 (16:04 +0200)
commit2bb90e5cc90e1d09f631aeab041a9cf913a5bbe5
tree2bd6fddc5a229ea3926fffc1fa4841a16f45ad9dtree | snapshot
parent45a4521dcbd92e71c9e53031b40e34211d3b4febcommit | diff
bpf: sockmap, synchronize_rcu before free'ing map

We need to have a synchronize_rcu before free'ing the sockmap because
any outstanding psock references will have a pointer to the map and
when they use this could trigger a use after free.

Fixes: 604326b41a6fb ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: John Fastabend <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
net/core/sock_map.c diff | blob | blame | history
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