---
id: CVE-2026-98790
title: 'perf: Fix race between perf_event_exit_task() and perf_pending_task()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  perf: Fix race between perf_event_exit_task() and perf_pending_task()

  A race condition exists between perf_event_exit_task() and
  perf_pending_task() during begin_new_e…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 97ba62b278674293762c3d91f724f1bb922f04e0 <
    672b8a9ce8f51b991481dfde26fba5cc4340a91a
  - >-
    Linux >= 97ba62b278674293762c3d91f724f1bb922f04e0 <
    524063fea29f8a841e49927ea7a8085194ad3ec2
  - >-
    Linux >= 97ba62b278674293762c3d91f724f1bb922f04e0 <
    81e61e3f8befa1bae3ec8e779d8ada5e5e362c21
  - >-
    Linux >= 97ba62b278674293762c3d91f724f1bb922f04e0 <
    ffb684f2aa141eeb0caa6308422e7e05d1ded7c4
  - Linux 5.13
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T15:48:27.412Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98790'
references:
  - 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:
  - cve.org
ingestedAt: '2026-10-18T16:47:32.486Z'
---

## Overview

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

perf: Fix race between perf_event_exit_task() and perf_pending_task()

A race condition exists between perf_event_exit_task() and
perf_pending_task() during begin_new_exec().

During begin_new_exec(), perf_event_exit_task() may be called, and the
PF_EXITING flag is not set on task. So perf_sigtrap() continues to execute
and triggers WARN_ON_ONCE(event->ctx->task != current).

Since both task exit and exec paths can call perf_event_exit_task() which
sets ctx->task to TASK_TOMBSTONE, fix this by explicitly checking if
event->ctx->task equals TASK_TOMBSTONE and dropping the redundant
PF_EXITING check.

## Affected

- `Linux >= 97ba62b278674293762c3d91f724f1bb922f04e0 < 672b8a9ce8f51b991481dfde26fba5cc4340a91a`
- `Linux >= 97ba62b278674293762c3d91f724f1bb922f04e0 < 524063fea29f8a841e49927ea7a8085194ad3ec2`
- `Linux >= 97ba62b278674293762c3d91f724f1bb922f04e0 < 81e61e3f8befa1bae3ec8e779d8ada5e5e362c21`
- `Linux >= 97ba62b278674293762c3d91f724f1bb922f04e0 < ffb684f2aa141eeb0caa6308422e7e05d1ded7c4`
- `Linux 5.13`

## Remediation

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