---
id: CVE-2026-98729
title: >-
  kernel: x86/mm: Don't apply va_align to hugetlb mappings on AMD F15h
  (CVE-2026-98729)
summary: >-
  A flaw was found in the Linux kernel. On systems utilizing specific AMD
  processors, improper virtual address alignment for huge page memory mappings
  can allow a local user to cause a Denial of Service (DoS). When unmapping
  these misaligned…
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-617
vendor: Red Hat
product: Red Hat Enterprise Linux 10
affected:
  - enterprise_linux 10
published: '2026-10-18'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T00:35:31+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98729.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98729.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98729'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2555163'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98729'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98729'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98729.mbox
  - url: 'https://git.kernel.org/stable/c/fe23680e6f1d52b8cc45d77bf7c54249508a81c7'
  - url: 'https://git.kernel.org/stable/c/b46b2e2de47ca9449532b0a7110ed99f79061d6e'
  - url: 'https://git.kernel.org/stable/c/d2457a7e2727dc747a61a50d65c2f259afce8c45'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00166
epssPercentile: 0.05771
ingestedAt: '2026-10-18T16:47:32.506Z'
---

## Overview

A flaw was found in the Linux kernel. On systems utilizing specific AMD processors, improper virtual address alignment for huge page memory mappings can allow a local user to cause a Denial of Service (DoS). When unmapping these misaligned memory ranges during teardown, the kernel encounters an internal assertion failure, resulting in a system crash.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98729.json)

**kernel: x86/mm: Don't apply va_align to hugetlb mappings on AMD F15h** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.

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