---
id: CVE-2026-98799
title: >-
  kernel: bpf: Skip detached progs in trampoline images that are still in use
  (CVE-2026-98799)
summary: >-
  A flaw was found in the Linux kernel's BPF (Berkeley Packet Filter) subsystem.
  When a BPF program attached to a trampoline is detached while another task is
  paused in an active routine, the kernel can prematurely release the detached
  progr…
severity: medium
cvss: 4.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-825
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-10-18'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T15:35:56+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98799.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98799.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98799'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2555160'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98799'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98799'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98799.mbox
  - url: 'https://git.kernel.org/stable/c/967566ad325b42150483e81acb09ea9d800c00b8'
  - url: 'https://git.kernel.org/stable/c/17637e1a581a22466ac3620a91e099683ff9cc6f'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00155
epssPercentile: 0.04616
ingestedAt: '2026-10-18T16:47:32.483Z'
---

## Overview

A flaw was found in the Linux kernel's BPF (Berkeley Packet Filter) subsystem. When a BPF program attached to a trampoline is detached while another task is paused in an active routine, the kernel can prematurely release the detached program from memory. A local user could exploit this race condition when the paused task resumes execution, causing the kernel to access freed memory and resulting in a system crash and Denial of Service (DoS).

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, 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-2026-98799.json)

**kernel: bpf: Skip detached progs in trampoline images that are still in use** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.

Affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

No fix planned:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

Not affected:

- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7

## Remediation

Fix deferred