---
id: CVE-2026-64035
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  igc: set tx buffer type for SMD frames

  Sashiko pointed out that igc_fpe_init_smd_frame() initializes
  igc_tx_buffer fields for an SMD skb, but does not set the buffer t…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  igc: set tx buffer type for SMD frames

  Sashiko pointed out that igc_fpe_init_smd_frame() initializes
  igc_tx_buffer fields for an SMD skb, but does not set the buffer t…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-909
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 6.16, < 6.18.34'
  - 'linux_kernel >= 6.19, < 7.0.11'
  - linux_kernel = 7.1
patched:
  - linux_kernel 7.0.11
published: '2026-07-19'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T15:32:14.097'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64035'
references:
  - url: 'https://git.kernel.org/stable/c/1c8587bd025244aa52061f5ceecbf5e68a1063d9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/1f83545f432d106d5fc71d3997b2d382104ebcc4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5acc641e590e008caaed480ed9ffae47cf7ecbdf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00442
epssPercentile: 0.36648
ingestedAt: '2026-10-13T15:33:40.028Z'
---

## Overview

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

igc: set tx buffer type for SMD frames

Sashiko pointed out that igc_fpe_init_smd_frame() initializes
igc_tx_buffer fields for an SMD skb, but does not set the buffer type:
https://sashiko.dev/#/patchset/20260415025226.114115-1-kohei%40enjuk.jp

Since igc_tx_buffer entries are reused, a stale XDP or XSK type can
remain and make TX completion use the wrong cleanup path.

Set the buffer type to IGC_TX_BUFFER_TYPE_SKB.

## Affected

- `linux_kernel >= 6.16, < 6.18.34`
- `linux_kernel >= 6.19, < 7.0.11`
- `linux_kernel = 7.1`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.0.11`