CVE-2026-46283

Description

In the Linux kernel, the following vulnerability has been resolved: tpm: Use kfree_sensitive() to free auth session in tpm_dev_release() tpm_dev_release() uses plain kfree() to free chip->auth, which contains sensitive cryptographic material including HMAC session keys, nonces, and passphrase data (struct tpm2_auth). Every other code path that frees this structure uses kfree_sensitive() to zero the memory before releasing it: both tpm2_end_auth_session() and tpm_buf_check_hmac_response() do so. The tpm_dev_release() path is the only one that does not, leaving key material in freed slab memory until it is eventually overwritten. Use kfree_sensitive() for consistency with the rest of the driver and to ensure session keys are scrubbed during device teardown.

Overview

State

—

Assigner (CNA)

—

CVSS severity

high

CVSS score

7.1 / 10

CVSS vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Effective score

7.1 / 10 HIGH source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2026-46283

Linked Threat

CVE-2026-46283 — CVE-2026-46283

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published

2026-06-08 17:16:46 UTC

NVD last modified

2026-07-23 08:10:00 UTC

NVD CVSS v3.1

5.5 / 10 MEDIUM source: nvd@nist.gov

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitability subscore

1.8 / 10

Impact subscore

3.6 / 10

EPSS score

0.0012 (probability of exploitation in next 30 days)

EPSS percentile

2.34% vs all CVEs — higher = more likely to be exploited, as of 2026-08-01

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2026-35148

Assigner

Linux

Published

Jun 8, 2026, 3:41:26 PM

Updated

Jun 14, 2026, 6:06:13 PM

EUVD base score

0.0 / 10

EUVD-reported EPSS

0.1200

Vendors

Linux

Products

Linux (patch: 7.1)

Linux (699e3efd6c645c741ea4d6d58282c56b6d108cf7 <84ced03172da544c9f8c0862faad48104f519352)

Linux (patch: 7.0.4)

Linux (patch: 0)

Linux (699e3efd6c645c741ea4d6d58282c56b6d108cf7 <c424d2664f08c77f08b4580b5f0cbaabf7c229b2)

Linux (patch: 6.12.86)

Linux (699e3efd6c645c741ea4d6d58282c56b6d108cf7 <53e6d2d834df40960b655b353e7a8ff4d927e1c7)

Linux (patch: 6.18.27)

Linux (6.10)

Linux (699e3efd6c645c741ea4d6d58282c56b6d108cf7 <dd3ac52ea7a001406c7dbc663aae4b9f89da679a)

Aliases

GHSA-c745-g7j9-cpw5

ENISA description: In the Linux kernel, the following vulnerability has been resolved: tpm: Use kfree_sensitive() to free auth session in tpm_dev_release() tpm_dev_release() uses plain kfree() to free chip->auth, which contains sensitive cryptographic material including HMAC session keys, nonces, and passphrase data (struct tpm2_auth). Every other code path that frees this structure uses kfree_sensitive() to zero the memory before releasing it: both tpm2_end_auth_session() and tpm_buf_check_hmac_response() do so. The tpm_dev_release() path is the only one that does not, leaving key material in freed slab memory until it is eventually overwritten. Use kfree_sensitive() for consistency with the rest of the driver and to ensure session keys are scrubbed during device teardown.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

Web references (6)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://git.kernel.org/stable/c/53e6d2d834df40960b655b353e7a8ff4d927e1c7 tenable:git.kernel.org
• https://git.kernel.org/stable/c/84ced03172da544c9f8c0862faad48104f519352 tenable:git.kernel.org
• https://git.kernel.org/stable/c/c424d2664f08c77f08b4580b5f0cbaabf7c229b2 tenable:git.kernel.org
• https://git.kernel.org/stable/c/dd3ac52ea7a001406c7dbc663aae4b9f89da679a tenable:git.kernel.org
• https://nvd.nist.gov/vuln/detail/CVE-2026-46283 tenable:nvd.nist.gov
• https://www.cve.org/CVERecord?id=CVE-2026-46283 tenable:www.cve.org

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

• Microsoft and Adobe Patch Tuesday, May 2026 Security Update Review
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  web:cybersecuritynews.com

  Microsoft has officially acknowledged a critical zero-day vulnerability in Microsoft Defender, publicly dubbed "RoguePlanet," and confirmed it is actively developing a security patch to address the flaw.

  2026-06-19 02:38 UTC
• Nvd - Cve-2026-46832
  web:nvd.nist.gov

  An official website of the United States government Here's how you know

  2026-06-19 02:38 UTC
• Security Update Guide - Loading - Microsoft
  web:portal.msrc.microsoft.com

  The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

  2026-06-19 02:38 UTC
• Microsoft working on a fix for RoguePlanet, a flaw that grants full PC ...
  web:www.malwarebytes.com

  Microsoft says it's working on a fix for an unpatched Defender vulnerability that can give attackers the highest level of access on Windows.

  2026-06-19 02:38 UTC
• Microsoft Technical Security Notifications
  web:www.microsoft.com

  Security Update Guide Notifications Microsoft's free Security Update Guide Notifications provide links to security-related software updates and notification of re-released security updates. These notifications are sent via email throughout the month as needed.

  2026-06-19 02:38 UTC
• Oracle Critical Security Patch Update Advisory - May 2026
  web:www.oracle.com

  This Critical Security Patch Update contains 35 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Security Patch Update and other Oracle Software Security Assurance activities is located at May 2026 Critical Security Patch Update: Executive Summary and Analysis.

  2026-06-19 02:38 UTC
• Patch Tuesday May 2026 - PDQ
  web:www.pdq.com

  May 2026 Patch Tuesday is here, and PDQ is back with another recap. Will we see another month of increased CVE volume? Is AI to blame? Dive in to learn more.

  2026-06-19 02:38 UTC
• Patch Tuesday - June 2026 - Rapid7
  web:www.rapid7.com

  Microsoft is publishing 200 vulnerabilities on June 2026 Patch Tuesday, including an HTTP/2 denial of service vulnerability and an elevation of privilege vulnerability in PowerToys.

  2026-06-19 02:38 UTC
• Patch Tuesday June 2026: Security Updates & CVE Analysis
  web:zecurit.com

  Get the complete breakdown of Microsoft's June 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

  2026-06-19 02:38 UTC

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