---
id: CVE-2026-98845
title: 'kernel: tpm: Disable TPM on null key name mismatch (CVE-2026-98845)'
summary: >-
  A flaw was found in the Linux kernel's Trusted Platform Module (TPM)
  subsystem. This vulnerability allows an attacker to bypass TPM reset
  protections because the driver fails to disable the device when a null key
  integrity check fails. Con…
severity: medium
cvss: 4.5
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L'
cvssSource: vendor
cwe: CWE-393
vendor: Red Hat
product: Red Hat Enterprise Linux 10
affected:
  - enterprise_linux 10
published: '2026-10-18'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T22:14:21+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98845.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98845.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98845'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2555219'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98845'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98845'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98845.mbox
  - url: 'https://git.kernel.org/stable/c/a03d0c64cd827a622578623a78defd66b6593b82'
  - url: 'https://git.kernel.org/stable/c/96c46c75b0d470b4204f9fe1bdb075cd2ebaebfa'
  - url: 'https://git.kernel.org/stable/c/f6599d8830fe7ddab7334cc17846fd9ac9a7fa50'
  - url: 'https://git.kernel.org/stable/c/015fb29a748342a186f37b602ac70017098c8251'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00156
epssPercentile: 0.04729
ingestedAt: '2026-10-18T16:47:32.466Z'
---

## Overview

A flaw was found in the Linux kernel's Trusted Platform Module (TPM) subsystem. This vulnerability allows an attacker to bypass TPM reset protections because the driver fails to disable the device when a null key integrity check fails. Consequently, the TPM continues serving requests and cryptographic authorization sessions may proceed using uninitialized key handles, compromising the integrity of secure operations.

## 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-2026-98845.json)

**kernel: tpm: Disable TPM on null key name mismatch** — 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