CVE-2024-42107: ice: Don't process extts if PTP is disabled

Severity: medium (CVSS 4.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-07-30 · updated 2026-10-30
Weakness: CWE-367

Description

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.

Affected products

Linux kernel: from 5.14 before 6.9.9; 6.10-rc1, 6.10-rc2, 6.10-rc3, 6.10-rc4, 6.10-rc5, 6.10-rc6 — fixed in 6.9.9
Linux: 5.14 — fixed in 6.10

How to fix

Upgrade to a fixed version: Linux kernel 6.9.9; Linux 6.10. Check the vendor advisory for mitigations.

References

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