---
id: CVE-2026-98592
title: >-
  kernel: net: spacemit: clear TX descriptor on fragment mapping failure
  (CVE-2026-98592)
summary: >-
  A flaw was found in the Linux kernel's SpacemiT Ethernet driver. During
  network packet transmission, a failure to map packet fragments causes the
  driver to release memory buffers without properly clearing the corresponding
  hardware descrip…
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:L/AC:H/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 10
affected:
  - enterprise_linux 10
published: '2026-10-18'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T04:52:13+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98592.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98592.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98592'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2554985'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98592'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98592'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98592.mbox
  - url: 'https://git.kernel.org/stable/c/ca9986cc824f2feb79b4a83e5f6f4c24c2140448'
  - url: 'https://git.kernel.org/stable/c/3001a103a367c6051c43aff363b6979c10e65347'
  - url: 'https://git.kernel.org/stable/c/2d14720beb58870b15a52b236c3ab0be0e06e915'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00198
epssPercentile: 0.09498
ingestedAt: '2026-10-18T15:45:12.249Z'
---

## Overview

A flaw was found in the Linux kernel's SpacemiT Ethernet driver. During network packet transmission, a failure to map packet fragments causes the driver to release memory buffers without properly clearing the corresponding hardware descriptors. A local user able to trigger transmission mapping errors can cause the network controller's Direct Memory Access (DMA) engine to access unmapped memory, potentially resulting in memory corruption or a Denial of Service (DoS) through a system crash.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98592.json)

**kernel: net: spacemit: clear TX descriptor on fragment mapping failure** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-20.

Affected:

- Red Hat Enterprise Linux 10

No fix planned:

- Red Hat Enterprise Linux 10

Not affected:

- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

## Remediation

Fix deferred