CVE-2026-46180

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task Watchdog task might end between send_sig() and kthread_stop() calls, what results in the use-after-free issue. Fix this by increasing watchdog task reference count before calling send_sig() and dropping it by switching to kthread_stop_put().

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: 5.5 / 10 MEDIUM MS rating: Moderate
CWE(s): —
Reserved: 2026-05-13
Published: 2026-05-28 09:36 UTC
Last updated: 2026-05-28 09:36 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/46xxx/CVE-2026-46180.json
Linked Threat: CVE-2026-46180 — CVE-2026-46180

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: 2026-05-28 10:16:33 UTC
NVD last modified: 2026-06-19 13:16:34 UTC
NVD CVSS v3.1: 7.8 / 10 HIGH source: nvd@nist.gov
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability subscore: 1.8 / 10
Impact subscore: 5.9 / 10
EPSS score: 0.0014 (probability of exploitation in next 30 days)
EPSS percentile: 3.35% vs all CVEs — higher = more likely to be exploited, as of 2026-07-28

NVD-assigned CWE(s): CWE-416 (differs from the CNA list above)

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-2026-32807
Assigner: Linux
Published: May 28, 2026, 9:36:33 AM
Updated: Jun 19, 2026, 11:59:49 AM
EUVD base score: 0.0 / 10
EUVD-reported EPSS: 0.1400
Vendors: Linux
Products: Linux (patch: 6.6.140)

Linux (a9ffda88be7416b8336f644806c2b3ed3ce08b26 <c623b63580880cc742255eaed3d79804c1b91143)

Linux (a9ffda88be7416b8336f644806c2b3ed3ce08b26 <ed4168d1a50fef5be8eca947fbbf05a28507d265)

Linux (patch: 6.18.30)

Linux (a9ffda88be7416b8336f644806c2b3ed3ce08b26 <a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a)

Linux (patch: 7.1)

Linux (patch: 5.15.210)

Linux (patch: 5.10.259)

Linux (a9ffda88be7416b8336f644806c2b3ed3ce08b26 <d616bb10de79e5c2bd8a24230a1128aeaf715615)

Linux (patch: 7.0.7)

Linux (patch: 6.12.88)

Linux (a9ffda88be7416b8336f644806c2b3ed3ce08b26 <df2e90d6a9955510f24f1dada78cfc439fd9fa88)

Linux (a9ffda88be7416b8336f644806c2b3ed3ce08b26 <908b92231e1ded53e43fcfad5e0704d83e1b803c)

Linux (a9ffda88be7416b8336f644806c2b3ed3ce08b26 <d16827cb1d3936f7627d0da6044483f743ebde03)

Linux (patch: 0)

Linux (3.3)

Linux (patch: 6.1.176)

Linux (a9ffda88be7416b8336f644806c2b3ed3ce08b26 <658d2e46c2e9a8eb9b80c5e803ce3c89885b3366)
Aliases: GHSA-jmx9-9wwr-m2r4

ENISA description: In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task Watchdog task might end between send_sig() and kthread_stop() calls, what results in the use-after-free issue. Fix this by increasing watchdog task reference count before calling send_sig() and dropping it by switching to kthread_stop_put().

EUVD references (8)

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 2026-11-05 03:38 UTC (source: CVRF).

MS severity: Moderate
MS CVSS base score: 5.5 / 10 (temporal 5.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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	`a9ffda88be7416b8336f644806c2b3ed3ce08b26` (affected), `a9ffda88be7416b8336f644806c2b3ed3ce08b26` (affected), `a9ffda88be7416b8336f644806c2b3ed3ce08b26` (affected), `a9ffda88be7416b8336f644806c2b3ed3ce08b26` (affected), `a9ffda88be7416b8336f644806c2b3ed3ce08b26` (affected)	—
Linux	Linux	`3.3` (affected), `0` (unaffected), `6.6.140` (unaffected), `6.12.88` (unaffected), `6.18.30` (unaffected), `7.0.7` (unaffected), `7.1-rc3` (unaffected)	—

Affected products — CPE 2.3 (3) 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*

Vendor references (5)

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

MITRE references (3) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

Web references (10)

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

None Available msrc
MSRC update guide: CVE-2026-46180 msrc
https://nvd.nist.gov/vuln/detail/CVE-2026-46180 tenable:nvd.nist.gov
https://www.cve.org/CVERecord?id=CVE-2026-46180 tenable:www.cve.org
https://git.kernel.org/stable/c/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366 tenable:git.kernel.org
https://www.first.org/epss/ tenable:www.first.org
https://git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803c tenable:git.kernel.org
https://git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143 tenable:git.kernel.org
https://git.kernel.org/stable/c/d16827cb1d3936f7627d0da6044483f743ebde03 tenable:git.kernel.org
https://git.kernel.org/stable/c/ed4168d1a50fef5be8eca947fbbf05a28507d265 tenable:git.kernel.org

NVD-tagged references (8)

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/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/d16827cb1d3936f7627d0da6044483f743ebde03 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/ed4168d1a50fef5be8eca947fbbf05a28507d265 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d616bb10de79e5c2bd8a24230a1128aeaf715615 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/df2e90d6a9955510f24f1dada78cfc439fd9fa88 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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.

2026-06-03 23:59 UTC
GitHub - Wemino/MadnessPatch: A patch that fixes various issues in the ...

web:github.com

A patch that fixes various issues in the PC port of Alice: Madness Returns.

2026-06-03 23:59 UTC
Zero Day (i.e., Critical) Security Patches for vSphere 8.x Perpetual ...

web:knowledge.broadcom.com

The intent of this article is to help customers that are using VMware vSphere 8.x address the most critical security vulnerabilities. Broadcom will provide all perpetual license customers, including those that have expired support contracts, with access to zero-day security patches, which are defined by Broadcom as patches for Critical Severity Security Alerts with a Common Vulnerability ...

2026-06-03 23:59 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.

2026-06-03 23:59 UTC
Oracle January 2026 Critical Patch Update Addresses 158 CVEs

web:securityboulevard.com

Oracle addresses 158 CVEs in its first quarterly update of 2026 with 337 patches, including 27 critical updates.Key takeaways:The first Critical Patch Update (CPU) for 2026 , contains fixes for 158 unique CVEs in 337 security updates. 27 issues (8% of all patches) were assigned a critical severity rating. CVE - 2026 -21945, a high severity Server-Side Request Forgery (SSRF) vulnerability in Oracle ...

2026-06-03 23:59 UTC
Landing Page | ServiceNow Common Vulnerabilities & Exposures (CVE ...

web:support.servicenow.com

Overview The advisories below document publicly disclosed Common Vulnerabilities and Exposures ( CVEs ) in the Now Platform by ServiceNow. Because ServiceNow uses various methods to communicate vulnerability information, patches, and other fixes, customers should review family, security patch , and hotfix release notes, which are available at https://docs.servicenow.com, for a complete list of ...

2026-06-03 23:59 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.

2026-06-03 23:59 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.

2026-06-03 23:59 UTC
Oracle Patches 450 Vulnerabilities With April 2026 CPU

web:www.securityweek.com

Oracle on Tuesday announced the release of 481 new security patches as part of its April 2026 Critical Patch Update (CPU). Across the 28 product families that received security updates, more than 300 patches address vulnerabilities that are remotely exploitable without authentication.

2026-06-03 23:59 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 .

2026-06-03 23:59 UTC
Microsoft Patch Tuesday March 2026 - 78 Vulnerabilities Fixed ...

web:cybersecuritynews.com

Microsoft released its March 2026 Patch Tuesday security update on March 10, 2026 , addressing 78 vulnerabilities across Windows, Microsoft Office, Azure, SQL Server, and .NET. The update includes one actively exploited zero-day vulnerability and multiple Critical-rated flaws demanding immediate attention from security teams. The most urgent fix this month is CVE - 2026 -21262, the sole zero-day ...

2026-06-19 02:28 UTC
Nvd - Cve-2026-4680

web:nvd.nist.gov

Description Use after free in FedCM in Google Chrome prior to 146..7680.165 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

2026-06-19 02:28 UTC
March 13, 2026—Hotpatch KB5084597 (OS Builds 26200.7982 and 26100.7982 ...

web:support.microsoft.com

The following summary outlines key issues addressed by this update. The bold text within the brackets indicates the item or area of the change. [Networking] Fixed: This update addresses a security issue in the Windows Routing and Remote Access Service (RRAS) management tool. If you connect to a malicious remote server, an attacker could disrupt the tool or run code on your device. For more ...

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

web:www.crowdstrike.com

Microsoft has released security updates for 130 vulnerabilities, including 30 critical, in its May 2026 Patch Tuesday rollout.

2026-06-19 02:28 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 02:28 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
Vulnerability Remediation vs. Mitigation: What are the Differences ...

web:www.secure.com

Remediation fully removes a vulnerability by fixing its root cause — through a patch , code fix , or system replacement. Mitigation reduces the risk of exploitation without removing the flaw itself, using controls like network segmentation or access restrictions.

2026-06-19 02:28 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-46180.json.

{
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            },
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            },
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            },
            {
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              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
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        }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task\n\nWatchdog task might end between send_sig() and kthread_stop() calls, what\nresults in the use-after-free issue. Fix this by increasing watchdog task\nreference count before calling send_sig() and dropping it by switching to\nkthread_stop_put()."
        }
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    "datePublished": "2026-05-28T09:36:33.904Z",
    "dateReserved": "2026-05-13T15:03:33.103Z",
    "dateUpdated": "2026-05-28T09:36:33.904Z",
    "state": "PUBLISHED"
  },
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}