---
id: CVE-2026-80982
title: >-
  kernel: net/smc: fix use-after-free in smc_rx_pipe_buf_release()
  (CVE-2026-80982)
summary: >-
  A flaw was found in the Linux kernel's Shared Memory Communications (SMC)
  network protocol. A race condition occurs when a network connection is closed
  while the system is still processing its receive buffer pages. This can lead
  to a use-a…
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T19:24:23+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80982.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80982.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80982'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532370'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80982'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80982'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80982.mbox
  - url: 'https://git.kernel.org/stable/c/dadd97c8296b23aa816e91ed70041820ae087baa'
  - url: 'https://git.kernel.org/stable/c/df441f3efbb50eb0f120b8de4bf441c31fb0551d'
  - url: 'https://git.kernel.org/stable/c/6a644a7340df978785f3109d1e0726a982ce2c6f'
  - url: 'https://git.kernel.org/stable/c/0761e49aa78c2f1362511054c6e9670653858837'
  - url: 'https://git.kernel.org/stable/c/0926f59ca0f94120895b92180c636a48d0ed3a6d'
  - url: 'https://git.kernel.org/stable/c/c924884743e948e25625b7fbf3ee2a9325a204a7'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00159
epssPercentile: 0.05509
scores:
  vendor: 7
  cna: 7.8
ingestedAt: '2026-09-14T15:23:07.454Z'
---

## Overview

A flaw was found in the Linux kernel's Shared Memory Communications (SMC) network protocol. A race condition occurs when a network connection is closed while the system is still processing its receive buffer pages. This can lead to a use-after-free vulnerability, where the system attempts to access memory that has already been released. An attacker could potentially exploit this flaw to cause a denial of service, leading to system instability or crashes.

## 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 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80982.json)

**kernel: net/smc: fix use-after-free in smc_rx_pipe_buf_release()** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.

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

Affected