---
id: CVE-2026-100236
title: A flaw was found in the DPDK GSO library
summary: >-
  A flaw was found in the DPDK GSO library. When software GSO copies packet
  headers into a new mbuf, it does not check that the header fits in the source
  first segment or in the destination buffer, and a header longer than the
  configured G…
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H'
cwe:
  - CWE-787
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T17:17:44.833'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100236'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-100236'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2541488'
    label: secalert@redhat.com
tags:
  - nvd
ingestedAt: '2026-10-14T17:44:53.625Z'
---

## Overview

A flaw was found in the DPDK GSO library. When software GSO copies packet headers into a new mbuf, it does not check that the header fits in the source first segment or in the destination buffer, and a header longer than the configured GSO segment size can underflow the payload-size calculation. A remote or guest-supplied packet processed with software GSO can trigger an out-of-bounds read or write.

## Remediation

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