---
title: "CVE-2026-89849: Linux Kernel qla2xxx - Denial of Service"
description: "Linux kernel qla2xxx driver contains a wild pointer dereference caused by improper handling of non-SCSI SRB types in the status IOCB fast path, letting attackers cause denial of service, exploit requires crafted firmware input."
url: https://panop.io/threat-heartbeat/CVE-2026-89849/
---

# CVE-2026-89849 Linux Kernel qla2xxx - Denial of Service

Linux kernel qla2xxx driver contains a wild pointer dereference caused by improper handling of non-SCSI SRB types in the status IOCB fast path, letting attackers cause denial of service, exploit requires crafted firmware input.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.35% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89849)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS vector

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

Published

16 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for this issue.

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-2026-89849](https://nvd.nist.gov/vuln/detail/CVE-2026-89849)
- [https://git.kernel.org/stable/c/0f41d07d72f2245208c45374ca8d0a1846cad667](https://git.kernel.org/stable/c/0f41d07d72f2245208c45374ca8d0a1846cad667)
- [https://git.kernel.org/stable/c/29f1f9ad9e354cd0b6e4f6fc75ba09162d6a04d9](https://git.kernel.org/stable/c/29f1f9ad9e354cd0b6e4f6fc75ba09162d6a04d9)
- [https://git.kernel.org/stable/c/8f0e31e7a41376abe7d6ca7cbee07fcf9de071e6](https://git.kernel.org/stable/c/8f0e31e7a41376abe7d6ca7cbee07fcf9de071e6)
- [https://git.kernel.org/stable/c/9204fb0888374083be74f799049649a17eab4191](https://git.kernel.org/stable/c/9204fb0888374083be74f799049649a17eab4191)
- [https://git.kernel.org/stable/c/b7418198b45b327194b97f856fe8ea8daa91f3fd](https://git.kernel.org/stable/c/b7418198b45b327194b97f856fe8ea8daa91f3fd)
- [https://git.kernel.org/stable/c/e38041b47c29316ba79b645e2ae0b713d216b1db](https://git.kernel.org/stable/c/e38041b47c29316ba79b645e2ae0b713d216b1db)
- [https://git.kernel.org/stable/c/e93aa3c5125d9a4352ac0fa8ba4a7f8f87881805](https://git.kernel.org/stable/c/e93aa3c5125d9a4352ac0fa8ba4a7f8f87881805)

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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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