---
id: CVE-2026-80997
title: >-
  kernel: net: ipa: fix stalled modem TX queue after runtime resume
  (CVE-2026-80997)
summary: >-
  A flaw was found in the Linux kernel's IP Accelerator (IPA) network driver.
  Specifically, the `ipa_start_xmit()` function incorrectly manages the transmit
  (TX) queue during a device's runtime resume process. This can lead to the TX
  queue s…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-821
vendor: Red Hat
product: Red Hat Enterprise Linux 10
affected:
  - enterprise_linux 10
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T17:01:51+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80997.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80997.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80997'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532044'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80997'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80997'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80997.mbox
  - url: 'https://git.kernel.org/stable/c/30d5226bac52073c91ce85c2dcff93b866baefdb'
  - url: 'https://git.kernel.org/stable/c/62da38b4b3a0dd74a3e0eecf4992d40385924205'
  - url: 'https://git.kernel.org/stable/c/30cef9c1229a36a9c80edb29296459849a2fbaa3'
  - url: 'https://git.kernel.org/stable/c/3cbfd627ee720f3d2460d2cbe2fe9e4130240db6'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00603
epssPercentile: 0.47251
scores:
  vendor: 5.5
  cna: 7.5
ingestedAt: '2026-09-14T15:23:07.476Z'
---

## Overview

A flaw was found in the Linux kernel's IP Accelerator (IPA) network driver. Specifically, the `ipa_start_xmit()` function incorrectly manages the transmit (TX) queue during a device's runtime resume process. This can lead to the TX queue stopping permanently because the mechanism intended to restart it is consumed prematurely. Consequently, the cellular data path can become unresponsive, resulting in a Denial of Service (DoS) for network communication.

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80997.json)

**kernel: net: ipa: fix stalled modem TX queue after runtime resume** — rated Low by Red Hat. Released 2026-09-11, updated 2026-09-14.

Affected:

- Red Hat Enterprise Linux 10

No fix planned:

- Red Hat Enterprise Linux 10

Not affected:

- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

## Remediation

Fix deferred