---
title: "CVE-2026-80997: Linux Kernel - Denial of Service"
description: "Linux kernel contains a denial of service caused by improper handling of the modem TX queue during runtime resume in net: ipa component, letting attackers cause permanent transmit stalls, exploit requires device runtime suspend/resume cycles."
url: https://panop.io/threat-heartbeat/CVE-2026-80997/
---

# CVE-2026-80997 Linux Kernel - Denial of Service

Linux kernel contains a denial of service caused by improper handling of the modem TX queue during runtime resume in net: ipa component, letting attackers cause permanent transmit stalls, exploit requires device runtime suspend/resume cycles.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.61% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-80997)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Published

11 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for net: ipa modem TX queue handling.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-80997](https://nvd.nist.gov/vuln/detail/CVE-2026-80997)
- [https://git.kernel.org/stable/c/30cef9c1229a36a9c80edb29296459849a2fbaa3](https://git.kernel.org/stable/c/30cef9c1229a36a9c80edb29296459849a2fbaa3)
- [https://git.kernel.org/stable/c/30d5226bac52073c91ce85c2dcff93b866baefdb](https://git.kernel.org/stable/c/30d5226bac52073c91ce85c2dcff93b866baefdb)
- [https://git.kernel.org/stable/c/3cbfd627ee720f3d2460d2cbe2fe9e4130240db6](https://git.kernel.org/stable/c/3cbfd627ee720f3d2460d2cbe2fe9e4130240db6)
- [https://git.kernel.org/stable/c/62da38b4b3a0dd74a3e0eecf4992d40385924205](https://git.kernel.org/stable/c/62da38b4b3a0dd74a3e0eecf4992d40385924205)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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