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author | Jakub Sitnicki <jakub@cloudflare.com> | 2020-02-06 14:16:51 +0300 |
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committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-02-08 00:36:26 +0300 |
commit | 0b2dc83906cf1e694e48003eae5df8fa63f76fd9 (patch) | |
tree | 2cb216e87bfd171ea95e8af962f20ed0fa2a3e96 /tools | |
parent | db6a5018b6e008c1d69c6628cdaa9541b8e70940 (diff) | |
download | linux-0b2dc83906cf1e694e48003eae5df8fa63f76fd9.tar.xz |
bpf, sockhash: Synchronize_rcu before free'ing map
We need to have a synchronize_rcu before free'ing the sockhash because any
outstanding psock references will have a pointer to the map and when they
use it, this could trigger a use after free.
This is a sister fix for sockhash, following commit 2bb90e5cc90e ("bpf:
sockmap, synchronize_rcu before free'ing map") which addressed sockmap,
which comes from a manual audit.
Fixes: 604326b41a6fb ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200206111652.694507-3-jakub@cloudflare.com
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions