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CVE-2026-97566: Linux

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: kernel: drop pending ADD_ADDR when removing ID0 The in-kernel MPTCP path manager can leave a stale ADD_ADDR announcement entry alive when removing the id 0 endpoint. This happens because the id 0 removal path does not tear down pending announcements, unlike the non-zero id path. When the PM later reselects id 0 after adding another signal endpoint, it finds the stale anno_list entry and hits WARN_ON_ONCE(mptcp_pm_is_kernel()) in mptcp_pm_announced_alloc(). Root cause: asymmetry between removal paths. - Non-zero id path: mptcp_nl_remove_subflow_and_signal_addr() calls mptcp_pm_remove_announced() to clean up. - Id 0 path: mptcp_nl_remove_id_zero_address() skips cleanup entirely. Fix by making the id 0 path symmetric: call mptcp_pm_announced_remove() and decrement add_addr_signaled before queuing the RM_ADDR. Subtle detail: signal endpoints are stored in anno_list with port 0, but msk_local carries the connection's local port. In other words, entries linked to ID0 paths should have port == 0. A follow-up patch will ensure that. mptcp_pm_announced_remove() uses use_port=true for comparison. So clear the port before the lookup.

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    • Linux Linux: 740d798e8767d8a449902b1a1bbc70facfce19b5 преди 4af59a98aead422a152d805a89586dbb65616fc8; 740d798e8767d8a449902b1a1bbc70facfce19b5 преди 189d60057e5f3d6a62e3d71a3cc428c9150bc14f; 740d798e8767d8a449902b1a1bbc70facfce19b5 преди bacf23e7c9876c9f4170166b3597cb22ea3ed39b; 740d798e8767d8a449902b1a1bbc70facfce19b5 преди d4a67a880654e1bfe318a31bea0bdbb026a09ade; 740d798e8767d8a449902b1a1bbc70facfce19b5 преди 545616b4e7325be3c61fc082538cb06d14f7b1db; 740d798e8767d8a449902b1a1bbc70facfce19b5 преди 2ac7d6e620764f1fc79eb4edd3610a7a661981ca
    • Linux Linux: 5.13; преди 5.13; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.112 до 6.12.*; 6.18.53 до 6.18.*; 7.2.7 до 7.2.*; от 7.3 нататък

    История

    • 25 септември 2026 Публикувано

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    CVE-2026-97566: Linux | freedomonline.bg