---
id: CVE-2026-43308
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  btrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref()

  There is no need to BUG(), we can just return an error and log an error
  message.
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  btrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref()

  There is no need to BUG(), we can just return an error and log an error
  message.
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'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 2.6.31, < 6.19.6'
patched:
  - linux_kernel 6.19.6
published: '2026-05-08'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T11:17:30.710'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-43308'
references:
  - url: 'https://git.kernel.org/stable/c/5549743e11c06da23cfa7712a994b9f1e69064c6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6ad4caadc6343c3d7987bf3211f15d66135c4c42'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c7d1d4ff56744074e005771aff193b927392d51f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00143
epssPercentile: 0.03215
ingestedAt: '2026-10-15T11:00:41.710Z'
---

## Overview

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

btrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref()

There is no need to BUG(), we can just return an error and log an error
message.

## Affected

- `linux_kernel >= 2.6.31, < 6.19.6`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.19.6`