---
id: CVE-2026-80717
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  sctp: validate Adaptation Indication parameter length

  The Adaptation Layer Indication parameter contains a fixed 32-bit
  Adaptation Code Point after its parameter heade…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  sctp: validate Adaptation Indication parameter length

  The Adaptation Layer Indication parameter contains a fixed 32-bit
  Adaptation Code Point after its parameter heade…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-805
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 6
  - enterprise_linux 7
  - enterprise_linux 8
  - enterprise_linux 9
published: '2026-08-28'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T20:18:08.423'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80717'
references:
  - url: 'https://git.kernel.org/stable/c/17b412468c7a44f66a385bda48cdc1e94e39bd6d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4c92c601c061e5602db2edeea54fef74aa304027'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5fd7cfc708dfc988ae9920c21075e6121bc89926'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/74b21f52c5c5a71a05c0ff70e513f4f04ff28b17'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7b7e4e3640d57bd8857f0052c8b0d8ed4e5e954a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/93942b5772e0eee4147d4799cc1b936ae12fa615'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bfa28cf99eb4d096c87da939f54233444d209ca5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fa7861ddbe3b525b5d541c15c3953d3569e6eb0e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80717.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80717'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2525437'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80717'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80717'
  - url: >-
      https://lore.kernel.org/linux-cve-announce/2026082810-CVE-2026-80717-e0b5@gregkh/T
tags:
  - nvd
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00329
epssPercentile: 0.25897
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-16T19:20:49.818970Z'
scores:
  nvd: 7.5
  vendor: 5.5
  cna: 7.5
ingestedAt: '2026-10-16T19:46:24.305Z'
---

## Overview

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

sctp: validate Adaptation Indication parameter length

The Adaptation Layer Indication parameter contains a fixed 32-bit
Adaptation Code Point after its parameter header. However,
sctp_verify_param() accepts a header-only parameter because the generic
parameter walker only requires the header to be present.

sctp_process_param() then reads adaptation_ind beyond the declared
parameter. When the malformed parameter is last in an INIT, the read
starts at the receive skb tail, and the value is copied into the state
cookie returned in the INIT ACK. This may disclose four receive-buffer
tail bytes.

Require the declared parameter length to match the fixed structure size
and abort the association through the existing invalid parameter length
path otherwise.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80717.json)