CVE-2026-46007

CVEs › CVE-2026-46007

Description

In the Linux kernel, the following vulnerability has been resolved: hwmon: (powerz) Avoid cacheline sharing for DMA buffer Depending on the architecture the transfer buffer may share a cacheline with the following mutex. As the buffer may be used for DMA, that is problematic. Use the high-level DMA helpers to make sure that cacheline sharing can not happen. Also drop the comment, as the helpers are documentation enough. https://sashiko.dev/#/message/20260408175814.934BFC19421%40smtp.kernel.org

Overview

State: PUBLISHED
Assigner (CNA): Linux
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: 2026-05-13
Published: 2026-05-27 12:56 UTC
Last updated: 2026-05-27 12:56 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/46xxx/CVE-2026-46007.json
Linked Threat: CVE-2026-46007 — CVE-2026-46007

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: 2026-05-27 14:17:18 UTC
NVD last modified: 2026-06-17 10:52:53 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: 2.32% vs all CVEs — higher = more likely to be exploited, as of 2026-08-01

NVD / KEV / EPSS data refreshed 2026-08-01 17:11 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

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-2026-32304
Assigner: Linux
Published: May 27, 2026, 12:56:06 PM
Updated: Jun 14, 2026, 5:47:37 PM
EUVD base score: 0.0 / 10
EUVD-reported EPSS: 0.1200
Vendors: Linux
Products: Linux (4381a36abdf1c5c0323c1c51f869dc000115eb20 <1869da3efe703b016b23d4885f3fe6c1751959c6)

Linux (4381a36abdf1c5c0323c1c51f869dc000115eb20 <3023c050af3600bf451153335dea5e073c9a3088)

Linux (patch: 7.0.4)

Linux (patch: 0)

Linux (patch: 7.1)

Linux (6.7)

Linux (4381a36abdf1c5c0323c1c51f869dc000115eb20 <270e5c576a6e30f6b337fa91d35b44c241297533)

Linux (patch: 6.12.88)

Linux (4381a36abdf1c5c0323c1c51f869dc000115eb20 <2fa2273016a0483217404cfe330967c4ac6832a9)

Linux (patch: 6.18.30)
Aliases: GHSA-42wq-59cj-7gvc

ENISA description: In the Linux kernel, the following vulnerability has been resolved: hwmon: (powerz) Avoid cacheline sharing for DMA buffer Depending on the architecture the transfer buffer may share a cacheline with the following mutex. As the buffer may be used for DMA, that is problematic. Use the high-level DMA helpers to make sure that cacheline sharing can not happen. Also drop the comment, as the helpers are documentation enough. https://sashiko.dev/#/message/20260408175814.934BFC19421%40smtp.kernel.org

EUVD references (4)

Affected products (2)

Vendor	Product	Versions	Platforms
Linux	Linux	`4381a36abdf1c5c0323c1c51f869dc000115eb20` (affected), `4381a36abdf1c5c0323c1c51f869dc000115eb20` (affected), `4381a36abdf1c5c0323c1c51f869dc000115eb20` (affected), `4381a36abdf1c5c0323c1c51f869dc000115eb20` (affected)	—
Linux	Linux	`6.7` (affected), `0` (unaffected), `6.12.88` (unaffected), `6.18.30` (unaffected), `7.0.4` (unaffected), `7.1-rc1` (unaffected)	—

Affected products — CPE 2.3 (1) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor references (4)

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

Web references (7)

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/1869da3efe703b016b23d4885f3fe6c1751959c6 tenable:git.kernel.org
https://git.kernel.org/stable/c/270e5c576a6e30f6b337fa91d35b44c241297533 tenable:git.kernel.org
https://git.kernel.org/stable/c/2fa2273016a0483217404cfe330967c4ac6832a9 tenable:git.kernel.org
https://git.kernel.org/stable/c/3023c050af3600bf451153335dea5e073c9a3088 tenable:git.kernel.org
https://nvd.nist.gov/vuln/detail/CVE-2026-46007 tenable:nvd.nist.gov
https://www.cve.org/CVERecord?id=CVE-2026-46007 tenable:www.cve.org
https://www.first.org/epss/ tenable:www.first.org

NVD-tagged references (4)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://git.kernel.org/stable/c/1869da3efe703b016b23d4885f3fe6c1751959c6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/270e5c576a6e30f6b337fa91d35b44c241297533 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/2fa2273016a0483217404cfe330967c4ac6832a9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/3023c050af3600bf451153335dea5e073c9a3088 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch

Remediations (20)

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

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Game Update Notes: March 31, 2026 - Guild Wars 2 Forums

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03/31/2026—March 31 Release Notes Note to users of third-party programs: The game may not launch or work properly after we release a new build if you use a third-party program, due to possible incompatibilities. ArenaNet cannot offer support if a third-party modification breaks, interferes with, ...

2026-06-04 00:13 UTC
ServiceNow - Now Support

web:hi.service-now.com

ServiceNow 24/7 Support Available Patches Australia Patch 2 Hot Fix 1 Zurich Patch 9 Hot Fix 1 See more for product documentation

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Persona 4: Golden Part #31 - June 15 - June 16: The Most Dangerous Prey

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Security Update Guide - Microsoft Security Response Center

web:msrc.microsoft.com

Security Update Guide - Microsoft Security Response Center

2026-06-04 00:13 UTC
OnlyFans

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OnlyFans is the social platform revolutionizing creator and fan connections. The site is inclusive of artists and content creators from all genres and allows them to monetize their content while developing authentic relationships with their fanbase.

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Google Translate

web:translate.google.com

Google's service, offered free of charge, instantly translates words, phrases, and web pages between English and over 100 other languages.

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VirusTotal - Home

web:www.virustotal.com

VirusTotal is a platform for scanning files and URLs for viruses, malware, and other threats using multiple antivirus engines.

2026-06-04 00:13 UTC
Montoya Twinz - YouTube

web:www.youtube.com

New video tomorrow y'all…I have to fix all the mic audio on it 🫩 165 21 Montoya Twinz

2026-06-04 00:13 UTC
Nvd - Cve-2026-46807

web:nvd.nist.gov

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

2026-06-19 02:27 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 02:27 UTC
June 2026 Patch Tuesday Fixes 200 Microsoft Vulnerabilities

web:thecyberexpress.com

June 2026 Patch Tuesday fixes 200 Microsoft vulnerabilities, including 3 zero-days and 33 critical flaws. Key risks and mitigation steps.

2026-06-19 02:27 UTC
CISA Adds One Known Exploited Vulnerability to Catalog

web:www.cisa.gov

BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied. While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV catalog vulnerabilities.

2026-06-19 02:27 UTC
Microsoft is working on a patch for 'YellowKey ... - Computerworld

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Microsoft says it is considering a patch for a zero-day vulnerability, dubbed YellowKey, that allows attackers with access to a Windows device to bypass Bitlocker encryption protection and read ...

2026-06-19 02:27 UTC
Microsoft Patch Tuesday - May 2026 - Lansweeper

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Which vulnerabilities, issues, and other things did Microsoft update? Discover what's new using Lansweeper's Patch Tuesday May 2026 summary.

2026-06-19 02:27 UTC
Microsoft Technical Security Notifications

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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 02:27 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 02:27 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 02:27 UTC
Patch Tuesday June 2026: Security Updates & CVE Analysis

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

2026-06-19 02:27 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-46007.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwmon/powerz.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "270e5c576a6e30f6b337fa91d35b44c241297533",
              "status": "affected",
              "version": "4381a36abdf1c5c0323c1c51f869dc000115eb20",
              "versionType": "git"
            },
            {
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              "status": "affected",
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            },
            {
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              "versionType": "git"
            },
            {
              "lessThan": "3023c050af3600bf451153335dea5e073c9a3088",
              "status": "affected",
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwmon/powerz.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.7"
            },
            {
              "lessThan": "6.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.88",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "vulnerable": true
                },
                {
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                },
                {
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                },
                {
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                  "versionEndExcluding": "7.1-rc1",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (powerz) Avoid cacheline sharing for DMA buffer\n\nDepending on the architecture the transfer buffer may share a cacheline\nwith the following mutex. As the buffer may be used for DMA, that is\nproblematic.\n\nUse the high-level DMA helpers to make sure that cacheline sharing can\nnot happen.\n\nAlso drop the comment, as the helpers are documentation enough.\n\nhttps://sashiko.dev/#/message/20260408175814.934BFC19421%40smtp.kernel.org"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:56:06.623Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/270e5c576a6e30f6b337fa91d35b44c241297533"
        },
        {
          "url": "https://git.kernel.org/stable/c/1869da3efe703b016b23d4885f3fe6c1751959c6"
        },
        {
          "url": "https://git.kernel.org/stable/c/2fa2273016a0483217404cfe330967c4ac6832a9"
        },
        {
          "url": "https://git.kernel.org/stable/c/3023c050af3600bf451153335dea5e073c9a3088"
        }
      ],
      "title": "hwmon: (powerz) Avoid cacheline sharing for DMA buffer",
      "x_generator": {
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46007",
    "datePublished": "2026-05-27T12:56:06.623Z",
    "dateReserved": "2026-05-13T15:03:33.092Z",
    "dateUpdated": "2026-05-27T12:56:06.623Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}