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Matthieu Baerts says: ==================== mptcp: pm: fix IDs not being reusable Here are more fixes for the MPTCP in-kernel path-manager. In this series, the fixes are around the endpoint IDs not being reusable for on-going connections when re-creating endpoints with previously used IDs. - Patch 1 fixes this case for endpoints being used to send ADD_ADDR. Patch 2 validates this fix. The issue is present since v5.10. - Patch 3 fixes this case for endpoints being used to establish new subflows. Patch 4 validates this fix. The issue is present since v5.10. - Patch 5 fixes this case when all endpoints are flushed. Patch 6 validates this fix. The issue is present since v5.13. - Patch 7 removes a helper that is confusing, and introduced in v5.10. It helps simplifying the next patches. - Patch 8 makes sure a 'subflow' counter is only decremented when removing a 'subflow' endpoint. Can be backported up to v5.13. - Patch 9 is similar, but for a 'signal' counter. Can be backported up to v5.10. - Patch 10 checks the last max accepted ADD_ADDR limit before accepting new ADD_ADDR. For v5.10 as well. - Patch 11 removes a wrong restriction for the userspace PM, added during a refactoring in v6.5. - Patch 12 makes sure the fullmesh mode sets the ID 0 when a new subflow using the source address of the initial subflow is created. Patch 13 covers this case. This issue is present since v5.15. - Patch 14 avoid possible UaF when selecting an address from the endpoints list. ==================== Link: https://patch.msgid.link/20240819-net-mptcp-pm-reusing-id-v1-0-38035d40de5b@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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