---
id: CVE-2024-42107
title: 'ice: Don''t process extts if PTP is disabled'
summary: |-
  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 …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 172db5f91d5f7b91670c68a7547798b0b5374158 <
    2ab26aeec3de0a677e02d6bc4dc85d49cd1ec4ac
  - >-
    Linux >= 172db5f91d5f7b91670c68a7547798b0b5374158 <
    9aa83a5eb013f8aff20e701aa25ba6b0eaad0b65
  - >-
    Linux >= 172db5f91d5f7b91670c68a7547798b0b5374158 <
    1c4e524811918600683b1ea87a5e0fc2db64fa9b
  - >-
    Linux >= 172db5f91d5f7b91670c68a7547798b0b5374158 <
    996422e3230e41468f652d754fefd1bdbcd4604e
  - Linux 5.14
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-09-10T16:17:43.025350Z'
published: '2024-07-30'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T12:18:50.668Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-42107'
references:
  - url: 'https://git.kernel.org/stable/c/2ab26aeec3de0a677e02d6bc4dc85d49cd1ec4ac'
  - url: 'https://git.kernel.org/stable/c/9aa83a5eb013f8aff20e701aa25ba6b0eaad0b65'
  - url: 'https://git.kernel.org/stable/c/1c4e524811918600683b1ea87a5e0fc2db64fa9b'
  - url: 'https://git.kernel.org/stable/c/996422e3230e41468f652d754fefd1bdbcd4604e'
tags:
  - cve.org
epss: 0.00215
epssPercentile: 0.11881
ingestedAt: '2026-10-21T12:48:53.734Z'
---

## Overview

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

- `Linux >= 172db5f91d5f7b91670c68a7547798b0b5374158 < 2ab26aeec3de0a677e02d6bc4dc85d49cd1ec4ac`
- `Linux >= 172db5f91d5f7b91670c68a7547798b0b5374158 < 9aa83a5eb013f8aff20e701aa25ba6b0eaad0b65`
- `Linux >= 172db5f91d5f7b91670c68a7547798b0b5374158 < 1c4e524811918600683b1ea87a5e0fc2db64fa9b`
- `Linux >= 172db5f91d5f7b91670c68a7547798b0b5374158 < 996422e3230e41468f652d754fefd1bdbcd4604e`
- `Linux 5.14`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.