---
id: CVE-2026-99026
title: 'net: team: free skb when broadcast has no txable port'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: team: free skb when broadcast has no txable port

  bc_transmit() sends the original skb through the last txable port.
  When no port is txable, it returns false witho…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 5fc889911a99043a97da1daa0d010ad72cbc3042 <
    961563117626f4681623077ec0cfd86f86da0d49
  - >-
    Linux >= 5fc889911a99043a97da1daa0d010ad72cbc3042 <
    f34b1bcac4581a5bd3daf9eff90f175e736b54aa
  - >-
    Linux >= 5fc889911a99043a97da1daa0d010ad72cbc3042 <
    489114c9ecae44e523361a4b3e610ee5ebd9189c
  - Linux 3.6
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T12:21:13.509Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-99026'
references:
  - url: 'https://git.kernel.org/stable/c/961563117626f4681623077ec0cfd86f86da0d49'
  - url: 'https://git.kernel.org/stable/c/f34b1bcac4581a5bd3daf9eff90f175e736b54aa'
  - url: 'https://git.kernel.org/stable/c/489114c9ecae44e523361a4b3e610ee5ebd9189c'
tags:
  - cve.org
ingestedAt: '2026-10-23T13:24:55.534Z'
---

## Overview

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

net: team: free skb when broadcast has no txable port

bc_transmit() sends the original skb through the last txable port.
When no port is txable, it returns false without consuming the skb, but
team_xmit() still returns NETDEV_TX_OK. AF_PACKET sends then retain the
skb and its socket write-memory charge.

A TX-enabled, link-down port keeps the broadcast transmit op installed.
Carrier can stay up through a second link-up, TX-disabled port or be
forced on by userspace. Free the original skb on the no-port path while
leaving the existing drop accounting intact.

Discovered by Sashiko during review of previous commit.

## Affected

- `Linux >= 5fc889911a99043a97da1daa0d010ad72cbc3042 < 961563117626f4681623077ec0cfd86f86da0d49`
- `Linux >= 5fc889911a99043a97da1daa0d010ad72cbc3042 < f34b1bcac4581a5bd3daf9eff90f175e736b54aa`
- `Linux >= 5fc889911a99043a97da1daa0d010ad72cbc3042 < 489114c9ecae44e523361a4b3e610ee5ebd9189c`
- `Linux 3.6`

## Remediation

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