diff options
| author |   Shardul Bankar <shardul.b@mpiricsoftware.com> | 2026-05-01 21:35:35 +0200 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2026-05-04 19:20:50 -0700 |
| commit | a6da02d4c00fdda2417e42ad2b762a9209e6cc49 (patch) | |
| tree | 79e0efe213dd637a5b477a2a6e30cb6f961b0324 /samples/kobject/ssh:/git@git.zx2c4.com/git: | |
| parent | mptcp: use MPJoinSynAckHMacFailure for SynAck HMAC failure (diff) | |
mptcp: use MPTCP_RST_EMPTCP for ACK HMAC validation failure
When HMAC validation fails on a received ACK + MP_JOIN in
subflow_syn_recv_sock(), the subflow is reset with reason
MPTCP_RST_EPROHIBIT ("Administratively prohibited"). This is
incorrect: HMAC validation failure is an MPTCP protocol-level
error, not an administrative policy denial.
The mirror site on the client, in subflow_finish_connect(), already
uses MPTCP_RST_EMPTCP ("MPTCP-specific error") for the same kind of
HMAC failure on the SYN/ACK + MP_JOIN. Use the same reason on the
server side for symmetry and accuracy.
Suggested-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Fixes: 443041deb5ef ("mptcp: fix NULL pointer in can_accept_new_subflow")
Cc: stable@vger.kernel.org
Signed-off-by: Shardul Bankar <shardul.b@mpiricsoftware.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260501-net-mptcp-misc-fixes-7-1-rc3-v1-2-b70118df778e@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'samples/kobject/ssh:/git@git.zx2c4.com/git:')
0 files changed, 0 insertions, 0 deletions