---
id: CVE-2026-89597
title: 'fbdev: uvesafb: unregister connector callback on init failure'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  fbdev: uvesafb: unregister connector callback on init failure

  uvesafb_init() registers the v86d connector callback before registering
  the platform driver. If platform_…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-772
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 <
    b149f77d04082a9da75944cdc488becb0e35258f
  - >-
    Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 <
    0352fdac3cbf11e3b323322ff8cd95e20cbf5cd7
  - >-
    Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 <
    17518e7123f7ef01b1155064dc01f2087583908e
  - >-
    Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 <
    9eb7b3cbe99c9c0edbff69eb155c723e30983c22
  - >-
    Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 <
    9f8a822b44c42502f105cf6574f4867067eecdd0
  - >-
    Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 <
    466a8af0dee2cf745307155e26884e19a37b7e15
  - >-
    Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 <
    9e768ae51426af2034d479133cfd73010d641b1a
  - >-
    Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 <
    de8db23aa7c337e606fca9faf48b3ba72968597a
  - Linux 2.6.24
published: '2026-09-11'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T08:49:29.665Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-89597'
references:
  - url: 'https://git.kernel.org/stable/c/b149f77d04082a9da75944cdc488becb0e35258f'
  - url: 'https://git.kernel.org/stable/c/0352fdac3cbf11e3b323322ff8cd95e20cbf5cd7'
  - url: 'https://git.kernel.org/stable/c/17518e7123f7ef01b1155064dc01f2087583908e'
  - url: 'https://git.kernel.org/stable/c/9eb7b3cbe99c9c0edbff69eb155c723e30983c22'
  - url: 'https://git.kernel.org/stable/c/9f8a822b44c42502f105cf6574f4867067eecdd0'
  - url: 'https://git.kernel.org/stable/c/466a8af0dee2cf745307155e26884e19a37b7e15'
  - url: 'https://git.kernel.org/stable/c/9e768ae51426af2034d479133cfd73010d641b1a'
  - url: 'https://git.kernel.org/stable/c/de8db23aa7c337e606fca9faf48b3ba72968597a'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89597.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89597'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532247'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89597'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89597'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89597.mbox
tags:
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.00169
epssPercentile: 0.06185
scores:
  cna: 7.8
  vendor: 5.5
ingestedAt: '2026-09-14T15:23:07.451Z'
---

## Overview

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

fbdev: uvesafb: unregister connector callback on init failure

uvesafb_init() registers the v86d connector callback before registering
the platform driver. If platform_driver_register() fails, the function
returns the error directly and leaves the connector callback registered.

The later platform-device failure path already unregisters the callback.
Add the same cleanup before the final return when platform-driver
registration fails.

This issue was identified during our ongoing static-analysis research while
reviewing kernel code.

## Affected

- `Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 < b149f77d04082a9da75944cdc488becb0e35258f`
- `Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 < 0352fdac3cbf11e3b323322ff8cd95e20cbf5cd7`
- `Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 < 17518e7123f7ef01b1155064dc01f2087583908e`
- `Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 < 9eb7b3cbe99c9c0edbff69eb155c723e30983c22`
- `Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 < 9f8a822b44c42502f105cf6574f4867067eecdd0`
- `Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 < 466a8af0dee2cf745307155e26884e19a37b7e15`
- `Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 < 9e768ae51426af2034d479133cfd73010d641b1a`
- `Linux >= 8bdb3a2d7df48b861972c4bfb58490853a228f51 < de8db23aa7c337e606fca9faf48b3ba72968597a`
- `Linux 2.6.24`

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89597.json)