---
id: CVE-2026-98052
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: bcmasp: clear txcb->last before writing each descriptor

  bcmasp_xmit() only wrote txcb->last = true for the final fragment
  of an SKB; non-final fragments left the …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: bcmasp: clear txcb->last before writing each descriptor

  bcmasp_xmit() only wrote txcb->last = true for the final fragment
  of an SKB; non-final fragments left the …
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'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 490cb412007de593e07c1d3e2b1ec4233886707c <
    9b26b54861ce05307d39a54ddedddf8747419614
  - >-
    Linux >= 490cb412007de593e07c1d3e2b1ec4233886707c <
    47a5cecca925ceb175d5adf712e667acf78f475f
  - >-
    Linux >= 490cb412007de593e07c1d3e2b1ec4233886707c <
    17e6ad484dea5ddf1c4a3d6ec77a5929161234de
  - >-
    Linux >= 490cb412007de593e07c1d3e2b1ec4233886707c <
    18e5e0ec0e9282c897e2aa81a3e43ccaee03b003
  - Linux 6.6
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T15:18:05.023'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98052'
references:
  - url: 'https://git.kernel.org/stable/c/17e6ad484dea5ddf1c4a3d6ec77a5929161234de'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/18e5e0ec0e9282c897e2aa81a3e43ccaee03b003'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/47a5cecca925ceb175d5adf712e667acf78f475f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9b26b54861ce05307d39a54ddedddf8747419614'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-25T11:06:38.846Z'
---

## Overview

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

net: bcmasp: clear txcb->last before writing each descriptor

bcmasp_xmit() only wrote txcb->last = true for the final fragment
of an SKB; non-final fragments left the field untouched.  If a
descriptor slot was reused while it still held a stale true from
a previous SKB (possible when tx_spb_ring_full() underreported
fullness), bcmasp_tx_reclaim() would see last == true mid-SKB and
call dev_consume_skb_any() prematurely, freeing the sk_buff while
its remaining fragments were still in flight.

Unconditionally clear txcb->last before the conditional set so every
descriptor slot starts from a known false state regardless of what a
prior transmission left behind.

## Remediation

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