---
id: CVE-2026-98846
title: >-
  kernel: sctp: check RCV_SHUTDOWN after the sendmsg connect wait
  (CVE-2026-98846)
summary: >-
  A flaw was found in the Linux kernel's Stream Control Transmission Protocol
  (SCTP) subsystem. A race condition can occur when an SCTP socket is shut down
  concurrently while waiting for a connection, causing an association structure
  to be f…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/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 6
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-10-18'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T22:14:26+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98846.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98846.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98846'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2555197'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98846'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98846'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98846.mbox
  - url: 'https://git.kernel.org/stable/c/1bef1944ef15a40797305bf916827b04df6307ca'
  - url: 'https://git.kernel.org/stable/c/e8f972b1759d26bbefe4c524caae1ed7c8a593bd'
  - url: 'https://git.kernel.org/stable/c/e701345d886e831fb593a0870d69c8c5de6fc938'
  - url: 'https://git.kernel.org/stable/c/222c41e0f50f1d5028be9baf0e1dcfc0bfa7f669'
  - url: 'https://git.kernel.org/stable/c/4f1da630d13de0370e2f6361f961f1c8b384af1c'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00156
epssPercentile: 0.04713
ingestedAt: '2026-10-18T16:47:32.465Z'
---

## Overview

A flaw was found in the Linux kernel's Stream Control Transmission Protocol (SCTP) subsystem. A race condition can occur when an SCTP socket is shut down concurrently while waiting for a connection, causing an association structure to be freed while still in use. A local user could exploit this flaw to trigger a use-after-free condition, resulting in a Denial of Service (DoS) via a system crash or potential privilege escalation.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8, 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 8, Red Hat Enterprise Linux 9, … · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98846.json)

**kernel: sctp: check RCV_SHUTDOWN after the sendmsg connect wait** — 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 8
- 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 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

Not affected:

- Red Hat Enterprise Linux 7

## Remediation

Out of support scope