---
id: CVE-2026-92486
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  bpf: Fix CFI mismatch in task work callback

  BPF subprograms use the bpf_callback_t ABI, but task work invokes the
  callback through a three-argument function pointer
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  bpf: Fix CFI mismatch in task work callback

  BPF subprograms use the bpf_callback_t ABI, but task work invokes the
  callback through a three-argument function pointer. T…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 38aa7003e369802f81a078f6673d10d97013f04f <
    85a33c910edc3651f68b17ae3c597c012545958f
  - >-
    Linux >= 38aa7003e369802f81a078f6673d10d97013f04f <
    a2cbab47f44e9ea8c5a161ecba1b6bb8535771eb
  - >-
    Linux >= 38aa7003e369802f81a078f6673d10d97013f04f <
    2805abd089576799b15092949420e3f8ba97fabd
  - Linux 6.18
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:17:50.697'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92486'
references:
  - url: 'https://git.kernel.org/stable/c/2805abd089576799b15092949420e3f8ba97fabd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/85a33c910edc3651f68b17ae3c597c012545958f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a2cbab47f44e9ea8c5a161ecba1b6bb8535771eb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92486.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-92486'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2536290'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-92486'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92486'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-92486.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-09-17T16:21:47.786Z'
epss: 0.00206
epssPercentile: 0.10616
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-628
---

## Overview

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

bpf: Fix CFI mismatch in task work callback

BPF subprograms use the bpf_callback_t ABI, but task work invokes the
callback through a three-argument function pointer. This trips kCFI.

Store and invoke the callback as bpf_callback_t.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92486.json)