---
id: CVE-2026-98790
title: >-
  kernel: perf: Fix race between perf_event_exit_task() and perf_pending_task()
  (CVE-2026-98790)
summary: >-
  A flaw was found in the Linux kernel's performance monitoring subsystem. A
  race condition occurs during process execution when cleaning up performance
  events while a task event is still pending. A local user could exploit this
  flaw to trig…
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-366
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 6
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-10-18'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T15:23:24+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98790.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98790.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98790'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2555190'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98790'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98790'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98790.mbox
  - url: 'https://git.kernel.org/stable/c/655acfa713bce9ae9c81a654459890c2f58cb4e8'
  - url: 'https://git.kernel.org/stable/c/672b8a9ce8f51b991481dfde26fba5cc4340a91a'
  - url: 'https://git.kernel.org/stable/c/524063fea29f8a841e49927ea7a8085194ad3ec2'
  - url: 'https://git.kernel.org/stable/c/81e61e3f8befa1bae3ec8e779d8ada5e5e362c21'
  - url: 'https://git.kernel.org/stable/c/ffb684f2aa141eeb0caa6308422e7e05d1ded7c4'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00168
epssPercentile: 0.05974
ingestedAt: '2026-10-18T16:47:32.486Z'
---

## Overview

A flaw was found in the Linux kernel's performance monitoring subsystem. A race condition occurs during process execution when cleaning up performance events while a task event is still pending. A local user could exploit this flaw to trigger an internal kernel warning, potentially leading to a Denial of Service (DoS) via system instability or a crash.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98790.json)

**kernel: perf: Fix race between perf_event_exit_task() and perf_pending_task()** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.

Affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

No fix planned:

- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

Not affected:

- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat OpenShift Container Platform 4

## Remediation

Out of support scope