---
id: CVE-2026-64245
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  fbdev: modedb: fix a possible UAF in fb_find_mode()

  If mode_option is NULL, it is assigned from mode_option_buf:

    if (!mode_option) {
      fb_get_options(NULL, &mode_…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  fbdev: modedb: fix a possible UAF in fb_find_mode()

  If mode_option is NULL, it is assigned from mode_option_buf:

    if (!mode_option) {
      fb_get_options(NULL, &mode_…
severity: none
published: '2026-07-24'
updated: '2026-07-27'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64245'
references:
  - url: 'https://git.kernel.org/stable/c/13b6f0cdd5cd5e60f682ec43134ab0e2024bd356'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4d418cf8daf57e454b4d855bf9b2419fd8e6a540'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/85b6256469cebdac395e7447147e06b2e151014f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c7dc382439f7b019e207055b52e9cec051d42fa9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f906347d75c7fc377041c6d3c535d0f08846aada'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00119
epssPercentile: 0.01583
ingestedAt: '2026-07-27T06:16:49.452Z'
---

## Overview

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

fbdev: modedb: fix a possible UAF in fb_find_mode()

If mode_option is NULL, it is assigned from mode_option_buf:

  if (!mode_option) {
    fb_get_options(NULL, &mode_option_buf);
    mode_option = mode_option_buf;
  }

Later, name is assigned from mode_option:

  const char *name = mode_option;

However, mode_option_buf is freed before name is no longer used:

  kfree(mode_option_buf);

while name is still accessed by:

  if ((name_matches(db[i], name, namelen) ||

Since name aliases mode_option_buf, this may result in a
use-after-free.

Fix this by extending the lifetime of mode_option_buf until the end of the
function by using scope-based resource management for cleanup.

## Remediation

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