---
id: CVE-2026-99099
title: 'x86/CPU/AMD: Fix AMD TLBI Erratum #1718'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  x86/CPU/AMD: Fix AMD TLBI Erratum #1718

  The processor may fail to invalidate a TLB entry while executing an
  INVLPGB/TLBSYNC instruction pair.

  Detect the erratum and a…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 82378c6c2f435dba66145609de16bf44a9de6303 <
    e3e6779f77ab6f0a1aa80e24868d2d89f31053fe
  - >-
    Linux >= 82378c6c2f435dba66145609de16bf44a9de6303 <
    098d80b04d0fe02889c332d061db968f070b83a6
  - >-
    Linux >= 82378c6c2f435dba66145609de16bf44a9de6303 <
    87db7795cbaaf636ae22ae031f4906db7bb77803
  - Linux 6.15
published: '2026-10-26'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T14:52:04.997Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-99099'
references:
  - url: 'https://git.kernel.org/stable/c/e3e6779f77ab6f0a1aa80e24868d2d89f31053fe'
  - url: 'https://git.kernel.org/stable/c/098d80b04d0fe02889c332d061db968f070b83a6'
  - url: 'https://git.kernel.org/stable/c/87db7795cbaaf636ae22ae031f4906db7bb77803'
tags:
  - cve.org
ingestedAt: '2026-10-26T15:29:30.505Z'
---

## Overview

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

x86/CPU/AMD: Fix AMD TLBI Erratum #1718

The processor may fail to invalidate a TLB entry while executing an
INVLPGB/TLBSYNC instruction pair.

Detect the erratum and apply a software workaround when a microcode fix
is not present.

## Affected

- `Linux >= 82378c6c2f435dba66145609de16bf44a9de6303 < e3e6779f77ab6f0a1aa80e24868d2d89f31053fe`
- `Linux >= 82378c6c2f435dba66145609de16bf44a9de6303 < 098d80b04d0fe02889c332d061db968f070b83a6`
- `Linux >= 82378c6c2f435dba66145609de16bf44a9de6303 < 87db7795cbaaf636ae22ae031f4906db7bb77803`
- `Linux 6.15`

## Remediation

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