diff options
| author | Eric Dumazet <edumazet@google.com> | 2022-03-02 19:17:22 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-03-03 09:49:03 +0300 |
| commit | 60ce37b03917e593d8e5d8bcc7ec820773daf81d (patch) | |
| tree | 9f4db2b6e73ce9cca1e0197b5ee97d02e15433e4 /net/ipv4 | |
| parent | 1dba41c9d2e2dc94b543394974f63d55aa195bfe (diff) | |
bpf, sockmap: Do not ignore orig_len parameter
Currently, sk_psock_verdict_recv() returns skb->len
This is problematic because tcp_read_sock() might have
passed orig_len < skb->len, due to the presence of TCP urgent data.
This causes an infinite loop from tcp_read_sock()
Followup patch will make tcp_read_sock() more robust vs bad actors.
Fixes: ef5659280eb1 ("bpf, sockmap: Allow skipping sk_skb parser program")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Jakub Sitnicki <jakub@cloudflare.com>
Tested-by: Jakub Sitnicki <jakub@cloudflare.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20220302161723.3910001-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv4')
0 files changed, 0 insertions, 0 deletions