---
id: CVE-2026-98594
title: 'kernel: tg3: clean up PHYLIB resources on probe failure (CVE-2026-98594)'
summary: >-
  A flaw was found in the Linux kernel's Broadcom Tigon3 (tg3) ethernet driver.
  When the driver encounters an error during device initialization, it fails to
  properly release and unregister associated networking hardware resources. A
  local u…
severity: low
cvss: 1.9
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L'
cvssSource: vendor
cwe: CWE-772
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 7
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-10-18'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T04:55:17+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98594.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98594.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98594'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2554930'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98594'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98594'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98594.mbox
  - url: 'https://git.kernel.org/stable/c/ce86d6929d03e6b0abcb781dfa50f9f0816bff78'
  - url: 'https://git.kernel.org/stable/c/a449eedb3b1eb5b8b1f5ed116a1bfe85eaaf81df'
  - url: 'https://git.kernel.org/stable/c/0844402326d4e48a28688f93ec6442e93bb442fa'
  - url: 'https://git.kernel.org/stable/c/e766321288b507afb70d2bfef6ba443213329f79'
  - url: 'https://git.kernel.org/stable/c/d2abb0013b933d59ee441185df0eca9e8c0b33eb'
  - url: 'https://git.kernel.org/stable/c/6515c41503eef849abd2c7364f34e4bb25110f90'
  - url: 'https://git.kernel.org/stable/c/b6c0c757c65893ad7bb17e8bcf33cdd8257d7b3d'
  - url: 'https://git.kernel.org/stable/c/a92e1a412c53dc0d9ad639e7abf8b3fc70a5b6ad'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00216
epssPercentile: 0.11996
ingestedAt: '2026-10-18T15:45:12.248Z'
---

## Overview

A flaw was found in the Linux kernel's Broadcom Tigon3 (tg3) ethernet driver. When the driver encounters an error during device initialization, it fails to properly release and unregister associated networking hardware resources. A local user capable of triggering initialization failures could exploit this flaw, leading to unreleased kernel resources and a potential Denial of Service (DoS) due to system instability.

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98594.json)

**kernel: tg3: clean up PHYLIB resources on probe failure** — rated Low by Red Hat. Released 2026-10-18, updated 2026-10-20.

Affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

No fix planned:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

Not affected:

- Red Hat Enterprise Linux 6

## Remediation

Fix deferred