ice: Don't process extts if PTP is disabled

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In the Linux kernel, the following vulnerability has been resolved: ice: Don't process extts if PTP is disabled The ice_ptp_extts_event() function can race with ice_ptp_release() and result in a NULL pointer dereference which leads to a kernel panic. Panic occurs because the ice_ptp_extts_event() function calls ptp_clock_event() with a NULL pointer. The ice driver has already released the PTP clock by the time the interrupt for the next external timestamp event occurs. To fix this, modify the ice_ptp_extts_event() function to check the PTP state and bail early if PTP is not ready.

Source published

30 Jul 2024 07:46:02 UTC

Source modified

30 Oct 2026 12:18:50 UTC

Observed here

30 Oct 2026 13:45:33 UTC

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