---
id: CVE-2026-23445
title: 'igc: fix page fault in XDP TX timestamps handling'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  igc: fix page fault in XDP TX timestamps handling

  If an XDP application that requested TX timestamping is shutting down
  while the link of the interface in use is still…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 15fd021bc4270273d8f4b7f58fdda8a16214a377 <
    5e4c90c94eb766d70e30694b7fe66862aabaf24b
  - >-
    Linux >= 15fd021bc4270273d8f4b7f58fdda8a16214a377 <
    31521c124e6488c4a81658e35199feb75a988d86
  - >-
    Linux >= 15fd021bc4270273d8f4b7f58fdda8a16214a377 <
    b02fa17d1744d19cd3820bdbf6ec5d85547977bf
  - >-
    Linux >= 15fd021bc4270273d8f4b7f58fdda8a16214a377 <
    45b33e805bd39f615d9353a7194b2da5281332df
  - Linux 6.10
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T15:08:12.258669Z'
published: '2026-04-03'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:09:56.563Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-23445'
references:
  - url: 'https://git.kernel.org/stable/c/5e4c90c94eb766d70e30694b7fe66862aabaf24b'
  - url: 'https://git.kernel.org/stable/c/31521c124e6488c4a81658e35199feb75a988d86'
  - url: 'https://git.kernel.org/stable/c/b02fa17d1744d19cd3820bdbf6ec5d85547977bf'
  - url: 'https://git.kernel.org/stable/c/45b33e805bd39f615d9353a7194b2da5281332df'
tags:
  - cve.org
epss: 0.00129
epssPercentile: 0.02222
ingestedAt: '2026-10-16T17:24:46.647Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

igc: fix page fault in XDP TX timestamps handling

If an XDP application that requested TX timestamping is shutting down
while the link of the interface in use is still up the following kernel
splat is reported:

[  883.803618] [   T1554] BUG: unable to handle page fault for address: ffffcfb6200fd008
...
[  883.803650] [   T1554] Call Trace:
[  883.803652] [   T1554]  <TASK>
[  883.803654] [   T1554]  igc_ptp_tx_tstamp_event+0xdf/0x160 [igc]
[  883.803660] [   T1554]  igc_tsync_interrupt+0x2d5/0x300 [igc]
...

During shutdown of the TX ring the xsk_meta pointers are left behind, so
that the IRQ handler is trying to touch them.

This issue is now being fixed by cleaning up the stale xsk meta data on
TX shutdown. TX timestamps on other queues remain unaffected.

## Affected

- `Linux >= 15fd021bc4270273d8f4b7f58fdda8a16214a377 < 5e4c90c94eb766d70e30694b7fe66862aabaf24b`
- `Linux >= 15fd021bc4270273d8f4b7f58fdda8a16214a377 < 31521c124e6488c4a81658e35199feb75a988d86`
- `Linux >= 15fd021bc4270273d8f4b7f58fdda8a16214a377 < b02fa17d1744d19cd3820bdbf6ec5d85547977bf`
- `Linux >= 15fd021bc4270273d8f4b7f58fdda8a16214a377 < 45b33e805bd39f615d9353a7194b2da5281332df`
- `Linux 6.10`

## Remediation

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