CVE-2026-46072

Description

In the Linux kernel, the following vulnerability has been resolved: ntfs3: add buffer boundary checks to run_unpack() run_unpack() checks `run_buf < run_last` at the top of the while loop but then reads size_size and offset_size bytes via run_unpack_s64() without verifying they fit within the remaining buffer. A crafted NTFS image with truncated run data in an MFT attribute triggers an OOB heap read of up to 15 bytes when the filesystem is mounted. Add boundary checks before each run_unpack_s64() call to ensure the declared field size does not exceed the remaining buffer. Found by fuzzing with a source-patched harness (LibAFL + QEMU).

Overview

State: PUBLISHED
Assigner (CNA): Linux
CVSS severity: high
CVSS score: 7.8 / 10
CVSS vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Effective score: 7.8 / 10 HIGH source: CNA overview
MSRC score: 7.1 / 10 HIGH MS rating: Moderate
CWE(s): —
Reserved: 2026-05-13
Published: 2026-05-27 12:58 UTC
Last updated: 2026-06-01 16:17 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/46xxx/CVE-2026-46072.json
Linked Threat: CVE-2026-46072 — CVE-2026-46072

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 14:17:28 UTC
NVD last modified: 2026-06-24 16:59:39 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: 2.44% 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-2026-32454
Assigner: Linux
Published: May 27, 2026, 12:58:00 PM
Updated: Jun 14, 2026, 5:52:15 PM
EUVD base score: 0.0 / 10
EUVD-reported EPSS: 0.1200
Vendors: Linux
Products: Linux (patch: 7.0.4)

Linux (82cae269cfa953032fbb8980a7d554d60fb00b17 <b62567bca47408e6739dee75f02a2113548af875)

Linux (82cae269cfa953032fbb8980a7d554d60fb00b17 <41aadf5cb482793a24e05aa136224e179a778586)

Linux (patch: 6.18.27)

Linux (patch: 6.6.140)

Linux (patch: 6.12.86)

Linux (82cae269cfa953032fbb8980a7d554d60fb00b17 <425de2aba0d061b3e715d51a3b1992c112ed5b99)

Linux (82cae269cfa953032fbb8980a7d554d60fb00b17 <bbad75336870b51b81979b97613746237fcb02fe)

Linux (patch: 6.1.175)

Linux (82cae269cfa953032fbb8980a7d554d60fb00b17 <bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9)

Linux (patch: 5.15.209)

Linux (5.15)

Linux (patch: 7.1)

Linux (82cae269cfa953032fbb8980a7d554d60fb00b17 <d3012690a7065d9ca86521a525ad11e8af491d45)

Linux (patch: 0)

Linux (82cae269cfa953032fbb8980a7d554d60fb00b17 <e64f7dfcaff79e7dfff9121a382dd77f9b462f62)
Aliases: GHSA-h65x-x69q-35px

ENISA description: In the Linux kernel, the following vulnerability has been resolved: ntfs3: add buffer boundary checks to run_unpack() run_unpack() checks `run_buf < run_last` at the top of the while loop but then reads size_size and offset_size bytes via run_unpack_s64() without verifying they fit within the remaining buffer. A crafted NTFS image with truncated run data in an MFT attribute triggers an OOB heap read of up to 15 bytes when the filesystem is mounted. Add boundary checks before each run_unpack_s64() call to ensure the declared field size does not exceed the remaining buffer. Found by fuzzing with a source-patched harness (LibAFL + QEMU).

EUVD references (7)

Microsoft Security Response Center MSRC

Microsoft's vendor-authoritative record from the Security Update Guide — its own CVSS score, impact, severity rating, exploit assessment, and KB-article fixes. Refreshed 2026-08-12 01:09 UTC (source: CVRF).

MS severity: Moderate
MS CVSS base score: 7.1 / 10 (temporal 6.5)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H/E:U
Release: 2026-May

Microsoft remediations / KB articles (2)

CBL-Mariner Releases — Vendor Fix / Security Update (fixed build 6.6.141.1-1)
https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade — None Available / CBL-Mariner Releases

Affected products (2)

Vendor	Product	Versions	Platforms
Linux	Linux	`82cae269cfa953032fbb8980a7d554d60fb00b17` (affected), `82cae269cfa953032fbb8980a7d554d60fb00b17` (affected), `82cae269cfa953032fbb8980a7d554d60fb00b17` (affected), `82cae269cfa953032fbb8980a7d554d60fb00b17` (affected), `82cae269cfa953032fbb8980a7d554d60fb00b17` (affected), `82cae269cfa953032fbb8980a7d554d60fb00b17` (affected), `82cae269cfa953032fbb8980a7d554d60fb00b17` (affected)	—
Linux	Linux	`5.15` (affected), `0` (unaffected), `5.15.209` (unaffected), `6.1.175` (unaffected), `6.6.140` (unaffected), `6.12.86` (unaffected), `6.18.27` (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 (7)

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

Web references (12)

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

MSRC update guide: CVE-2026-46072 msrc
None Available msrc
https://git.kernel.org/stable/c/b62567bca47408e6739dee75f02a2113548af875 tenable:git.kernel.org
https://git.kernel.org/stable/c/bbad75336870b51b81979b97613746237fcb02fe tenable:git.kernel.org
https://git.kernel.org/stable/c/bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9 tenable:git.kernel.org
https://git.kernel.org/stable/c/d3012690a7065d9ca86521a525ad11e8af491d45 tenable:git.kernel.org
https://git.kernel.org/stable/c/e64f7dfcaff79e7dfff9121a382dd77f9b462f62 tenable:git.kernel.org
https://nvd.nist.gov/vuln/detail/CVE-2026-46072 tenable:nvd.nist.gov
https://www.cve.org/CVERecord?id=CVE-2026-46072 tenable:www.cve.org
https://git.kernel.org/stable/c/41aadf5cb482793a24e05aa136224e179a778586 tenable:git.kernel.org
https://www.first.org/epss/ tenable:www.first.org
https://git.kernel.org/stable/c/425de2aba0d061b3e715d51a3b1992c112ed5b99 tenable:git.kernel.org

NVD-tagged references (7)

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/41aadf5cb482793a24e05aa136224e179a778586 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/425de2aba0d061b3e715d51a3b1992c112ed5b99 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/b62567bca47408e6739dee75f02a2113548af875 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/bbad75336870b51b81979b97613746237fcb02fe 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/d3012690a7065d9ca86521a525ad11e8af491d45 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/e64f7dfcaff79e7dfff9121a382dd77f9b462f62 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch

Remediations (17)

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

Microsoft Patch Tuesday May 2026 - 120 Vulnerabilities Fixed, Including ...

web:cybersecuritynews.com

Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.

2026-06-04 00:12 UTC
Microsoft's May 2026 Patch Tuesday - Hive Pro

web:hivepro.com

Microsoft Patch Tuesday Overview and Vulnerability Distribution Microsoft's May 2026 Patch Tuesday delivers a comprehensive security update addressing 137 Microsoft vulnerabilities across the product ecosystem.

2026-06-04 00:12 UTC
DEBIAN-CVE-2026-46072 | Mondoo Vulnerability Intelligence

web:mondoo.com

DEBIAN- CVE - 2026 - 46072 - UNKNOWN severity: (In the Linux kernel, the following vulnerability has been resolved: n ...)

2026-06-04 00:12 UTC
Security Update Guide - 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.

2026-06-04 00:12 UTC
KB5077465 - Description of the security update for SQL Server 2022 GDR ...

web:support.microsoft.com

Summary Improvements and fixes included in this update How to obtain and install the update More information File information Information about protection and security Summary This security update contains fixes and resolves vulnerabilities. To learn more about the vulnerabilities, see the following security advisories: CVE - 2026 -21262 - SQL Server Elevation of Privilege Vulnerability CVE-2026 ...

2026-06-04 00:12 UTC
Microsoft Patch Tuesday - May 2026 - Lansweeper

web:www.lansweeper.com

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

2026-06-04 00:12 UTC
Microsoft Defender vulnerabilities are being exploited in the wild

web:www.malwarebytes.com

The KEV catalog tracks vulnerabilities known to be exploited in the wild and sets patch deadlines for Federal Civilian Executive Branch (FCEB) agencies. Five of the added vulnerabilities are quite old by vulnerability standards. Patches were released in 2008, 2009, and 2010. But the Microsoft Defender vulnerabilities are from this year. Those ...

2026-06-04 00:12 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-06-04 00:12 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.

2026-06-04 00:12 UTC
Patch Tuesday - May 2026 - Rapid7

web:www.rapid7.com

Microsoft is publishing 137 vulnerabilities on May 2026 Patch Tuesday, including critical RCE in Netlogon and the Windows DNS client.

2026-06-04 00:12 UTC
Category: Patch Tuesday | Qualys

web:blog.qualys.com

Microsoft and Adobe Patch Tuesday, April 2026 Security Update Review Posted in Patch Tuesday, Vulnerabilities and Threat Research 7 Diksha Ojha March 11, 2026 - 8 min read

2026-06-19 02:28 UTC
Nvd - Cve-2026-46872

web:nvd.nist.gov

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

2026-06-19 02:28 UTC
Oracle CPU April 2026: Delayed RUs & First Analysis ¶

web:oradba.ch

On April 21, 2026 , Oracle released the Critical Patch Update (CPU) for April 2026 — 481 new security fixes across the entire Oracle product stack. For Oracle Database, this means another round of mandatory patching. What makes this quarter unusual: several key Release Updates, including 19.31 and 23.26.2, were not available on release day and are delayed by up to a week or more.

2026-06-19 02:28 UTC
April 2026 Patch Tuesday: Updates and Analysis | CrowdStrike

web:www.crowdstrike.com

Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.

2026-06-19 02:28 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 02:28 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 02:28 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 02:28 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-46072.json.

{
  "containers": {
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            "fs/ntfs3/run.c"
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            },
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            },
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            },
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs3: add buffer boundary checks to run_unpack()\n\nrun_unpack() checks `run_buf < run_last` at the top of the while loop\nbut then reads size_size and offset_size bytes via run_unpack_s64()\nwithout verifying they fit within the remaining buffer.  A crafted NTFS\nimage with truncated run data in an MFT attribute triggers an OOB heap\nread of up to 15 bytes when the filesystem is mounted.\n\nAdd boundary checks before each run_unpack_s64() call to ensure the\ndeclared field size does not exceed the remaining buffer.\n\nFound by fuzzing with a source-patched harness (LibAFL + QEMU)."
        }
      ],
      "providerMetadata": {
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      },
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        },
        {
          "url": "https://git.kernel.org/stable/c/b62567bca47408e6739dee75f02a2113548af875"
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      "title": "ntfs3: add buffer boundary checks to run_unpack()",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46072",
    "datePublished": "2026-05-27T12:58:00.299Z",
    "dateReserved": "2026-05-13T15:03:33.095Z",
    "dateUpdated": "2026-06-01T16:17:57.341Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}