---
id: CVE-2026-89799
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  bpf: Disable preemption in bpf_get_stackid

  The get_perf_callchain call needs disabled preemption plus we need
  it disabled as long as we access its returned trace entri…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  bpf: Disable preemption in bpf_get_stackid

  The get_perf_callchain call needs disabled preemption plus we need
  it disabled as long as we access its returned trace entri…
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'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= d5a3b1f691865be576c2bffa708549b8cdccda19 <
    ccf481d73bce6e851cec364fe831c86fe66877cf
  - >-
    Linux >= d5a3b1f691865be576c2bffa708549b8cdccda19 <
    c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf
  - >-
    Linux >= d5a3b1f691865be576c2bffa708549b8cdccda19 <
    15f1bd8574662f1b7b26aaa2e23ebf4066f0117d
  - Linux 4.6
published: '2026-09-16'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T14:17:27.000'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89799'
references:
  - url: 'https://git.kernel.org/stable/c/15f1bd8574662f1b7b26aaa2e23ebf4066f0117d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/18c71e4b65ee60b8611fc071bdd7159f10185117'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ccf481d73bce6e851cec364fe831c86fe66877cf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00163
epssPercentile: 0.05939
ingestedAt: '2026-09-16T10:53:54.009Z'
---

## Overview

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

bpf: Disable preemption in bpf_get_stackid

The get_perf_callchain call needs disabled preemption plus we need
it disabled as long as we access its returned trace entries buffer.

Note the bpf_get_stackid_pe function is executed already with
preemption disabled.

## Remediation

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