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(parent: 7995b21) | patch
bpf: tcp: Fix type confusion in bpf_skc_to_tcp_sock().
authorKuniyuki Iwashima <kuniyu@google.com>
Mon, 4 May 2026 21:04:51 +0000 (21:04 +0000)
committerMartin KaFai Lau <martin.lau@kernel.org>
Fri, 8 May 2026 18:38:10 +0000 (11:38 -0700)
commitdecb84b8383ab7acff94db208ef7ed19f9c55e1f
treeee35979c9c9943c53ffcf920e562eaa113b90a75tree | snapshot
parent7995b216a731db657f356f6ae37a42f445b9a0eccommit | diff
bpf: tcp: Fix type confusion in bpf_skc_to_tcp_sock().

bpf_skc_to_tcp_sock() only checks if sk->sk_protocol is
IPPROTO_TCP, but RAW socket can bypass it:

  socket(AF_INET, SOCK_RAW, IPPROTO_TCP)

Let's use sk_is_tcp().

Fixes: 478cfbdf5f13 ("bpf: Add bpf_skc_to_{tcp, tcp_timewait, tcp_request}_sock() helpers")
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20260504210610.180150-5-kuniyu@google.com
net/core/filter.c diff | blob | blame | history
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