CVE-2026-46163

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: b43legacy: enforce bounds check on firmware key index in RX path Same fix as b43: the firmware-controlled key index in b43legacy_rx() can exceed dev->max_nr_keys. The existing B43legacy_WARN_ON is non-enforcing in production builds, allowing an out-of-bounds read of dev->key[]. Make the check enforcing by dropping the frame for invalid indices.

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
MSRC score: 5.5 / 10 MEDIUM MS rating: Moderate
CWE(s): —
Reserved: 2026-05-13
Published: 2026-05-28 09:36 UTC
Last updated: 2026-06-01 16:19 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/46xxx/CVE-2026-46163.json
Linked Threat: CVE-2026-46163 — CVE-2026-46163

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 10:16:31 UTC
NVD last modified: 2026-06-17 10:53:11 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: 0.0013 (probability of exploitation in next 30 days)
EPSS percentile: 2.94% vs all CVEs — higher = more likely to be exploited, as of 2026-07-28

NVD-assigned CWE(s): CWE-129 (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-2026-32790
Assigner: Linux
Published: May 28, 2026, 9:36:18 AM
Updated: Jun 14, 2026, 5:59:18 PM
EUVD base score: 0.0 / 10
EUVD-reported EPSS: 0.1300
Vendors: Linux
Products: Linux (2.6.24)

Linux (patch: 6.1.175)

Linux (patch: 7.0.7)

Linux (patch: 6.6.140)

Linux (patch: 6.18.30)

Linux (patch: 7.1)

Linux (75388acd0cd827dc1498043daa7d1c760902cd67 <6ee946077607d7783ae6709a899213fc4fe08f35)

Linux (75388acd0cd827dc1498043daa7d1c760902cd67 <df805c1d085b7a96077f0964185764c87060950d)

Linux (patch: 5.10.258)

Linux (75388acd0cd827dc1498043daa7d1c760902cd67 <fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5)

Linux (patch: 5.15.209)

Linux (patch: 0)

Linux (75388acd0cd827dc1498043daa7d1c760902cd67 <a035766f970bde2d4298346a31a80685be5c0205)

Linux (75388acd0cd827dc1498043daa7d1c760902cd67 <1baaeb6adecb9691748c0253dab6ddd19a2b4e9e)

Linux (75388acd0cd827dc1498043daa7d1c760902cd67 <4242db36de99de734cc1f60e5edd86cda7e598c6)

Linux (75388acd0cd827dc1498043daa7d1c760902cd67 <9d1bc155802943e92c57a5fb923d23edfbf0b525)

Linux (75388acd0cd827dc1498043daa7d1c760902cd67 <a92bd0503df2488f2cc040f329ebccff1c1934cb)

Linux (patch: 6.12.88)
Aliases: GHSA-2qq4-4rxx-pjhm

ENISA description: In the Linux kernel, the following vulnerability has been resolved: wifi: b43legacy: enforce bounds check on firmware key index in RX path Same fix as b43: the firmware-controlled key index in b43legacy_rx() can exceed dev->max_nr_keys. The existing B43legacy_WARN_ON is non-enforcing in production builds, allowing an out-of-bounds read of dev->key[]. Make the check enforcing by dropping the frame for invalid indices.

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	`75388acd0cd827dc1498043daa7d1c760902cd67` (affected), `75388acd0cd827dc1498043daa7d1c760902cd67` (affected), `75388acd0cd827dc1498043daa7d1c760902cd67` (affected), `75388acd0cd827dc1498043daa7d1c760902cd67` (affected), `75388acd0cd827dc1498043daa7d1c760902cd67` (affected), `75388acd0cd827dc1498043daa7d1c760902cd67` (affected), `75388acd0cd827dc1498043daa7d1c760902cd67` (affected), `75388acd0cd827dc1498043daa7d1c760902cd67` (affected)	—
Linux	Linux	`2.6.24` (affected), `0` (unaffected), `5.10.258` (unaffected), `5.15.209` (unaffected), `6.1.175` (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 (8)

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

Web references (13)

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-2026-46163 msrc
None Available msrc
https://git.kernel.org/stable/c/6ee946077607d7783ae6709a899213fc4fe08f35 tenable:git.kernel.org
https://git.kernel.org/stable/c/9d1bc155802943e92c57a5fb923d23edfbf0b525 tenable:git.kernel.org
https://git.kernel.org/stable/c/a035766f970bde2d4298346a31a80685be5c0205 tenable:git.kernel.org
https://git.kernel.org/stable/c/a92bd0503df2488f2cc040f329ebccff1c1934cb tenable:git.kernel.org
https://git.kernel.org/stable/c/df805c1d085b7a96077f0964185764c87060950d tenable:git.kernel.org
https://git.kernel.org/stable/c/fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5 tenable:git.kernel.org
https://nvd.nist.gov/vuln/detail/CVE-2026-46163 tenable:nvd.nist.gov
https://www.cve.org/CVERecord?id=CVE-2026-46163 tenable:www.cve.org
https://git.kernel.org/stable/c/1baaeb6adecb9691748c0253dab6ddd19a2b4e9e tenable:git.kernel.org
https://www.first.org/epss/ tenable:www.first.org
https://git.kernel.org/stable/c/4242db36de99de734cc1f60e5edd86cda7e598c6 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/1baaeb6adecb9691748c0253dab6ddd19a2b4e9e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/4242db36de99de734cc1f60e5edd86cda7e598c6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/6ee946077607d7783ae6709a899213fc4fe08f35 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/9d1bc155802943e92c57a5fb923d23edfbf0b525 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/a035766f970bde2d4298346a31a80685be5c0205 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/a92bd0503df2488f2cc040f329ebccff1c1934cb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/df805c1d085b7a96077f0964185764c87060950d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5 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 April 2026 - 168 Vulnerabilities Fixed ...

web:cybersecuritynews.com

Microsoft has released its April 2026 Patch Tuesday security update, addressing 168 vulnerabilities across its product portfolio including one actively exploited zero-day and one publicly disclosed flaw that organizations must prioritize immediately.

2026-06-04 00:00 UTC
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 00:00 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 00:00 UTC
About the security content of Background Security Improvements for iOS ...

web:support.apple.com

This document describes the content of Background Security Improvements.

2026-06-04 00:00 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 ...

2026-06-04 00:00 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.

2026-06-04 00:00 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.

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

web:www.oracle.com

Oracle Critical Patch Update Advisory - January 2026 Description A Critical Patch Update is a collection of patches for multiple security vulnerabilities. These patches address vulnerabilities in Oracle code and in third party components included in Oracle products. These patches are usually cumulative, but each advisory describes only the security patches added since the previous Critical ...

2026-06-04 00:00 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 .

2026-06-04 00:00 UTC
Microsoft Confirms Defender RoguePlanet 0-Day Exploit and Working to ...

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 02:28 UTC
ITScape KVM Escape: CVE-2026-46316 PoC Exploit Disclosed

web:securityonline.info

The ITScape KVM escape vulnerability ( CVE - 2026 -46316) threatens arm64 clouds. Details and a guest-to-host escape exploit PoC are now publicly disclosed.

2026-06-19 02:28 UTC
Microsoft Patches 59 Vulnerabilities Including Six Actively Exploited ...

web:thehackernews.com

Microsoft patches 59 vulnerabilities, including six actively exploited zero-days, with CISA mandating urgent federal remediation .

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

web:www.crowdstrike.com

Microsoft's March 2026 Patch Tuesday addresses 82 CVEs , featuring eight Critical vulnerabilities.

2026-06-19 02:28 UTC
Microsoft fixes six zero-days on February 2026 Patch Tuesday

web:www.csoonline.com

Microsoft highlighted six new and actively exploited vulnerabilities among the 60 fixes issued in today's February Patch Tuesday releases.

2026-06-19 02:28 UTC
Microsoft Confirms It Is Urgently Working On Patch For ... - LinkedIn

web:www.linkedin.com

Microsoft has confirmed that it is developing a security update to address a newly disclosed zero-day vulnerability in Microsoft Defender, following the public release of exploit code that ...

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

AI Forensic Analysis

Only Available for Registered Users. Sign in to view.

Raw JSON

The full cvelistV5 record. Download as CVE-2026-46163.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/broadcom/b43legacy/xmit.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a92bd0503df2488f2cc040f329ebccff1c1934cb",
              "status": "affected",
              "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
              "versionType": "git"
            },
            {
              "lessThan": "df805c1d085b7a96077f0964185764c87060950d",
              "status": "affected",
              "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
              "versionType": "git"
            },
            {
              "lessThan": "4242db36de99de734cc1f60e5edd86cda7e598c6",
              "status": "affected",
              "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
              "versionType": "git"
            },
            {
              "lessThan": "1baaeb6adecb9691748c0253dab6ddd19a2b4e9e",
              "status": "affected",
              "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
              "versionType": "git"
            },
            {
              "lessThan": "6ee946077607d7783ae6709a899213fc4fe08f35",
              "status": "affected",
              "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
              "versionType": "git"
            },
            {
              "lessThan": "9d1bc155802943e92c57a5fb923d23edfbf0b525",
              "status": "affected",
              "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
              "versionType": "git"
            },
            {
              "lessThan": "fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5",
              "status": "affected",
              "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
              "versionType": "git"
            },
            {
              "lessThan": "a035766f970bde2d4298346a31a80685be5c0205",
              "status": "affected",
              "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/broadcom/b43legacy/xmit.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.24"
            },
            {
              "lessThan": "2.6.24",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "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": "7.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.88",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.30",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.7",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1-rc3",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: b43legacy: enforce bounds check on firmware key index in RX path\n\nSame fix as b43: the firmware-controlled key index in b43legacy_rx()\ncan exceed dev->max_nr_keys. The existing B43legacy_WARN_ON is\nnon-enforcing in production builds, allowing an out-of-bounds read of\ndev->key[].\n\nMake the check enforcing by dropping the frame for invalid indices."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-01T16:19:20.697Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a92bd0503df2488f2cc040f329ebccff1c1934cb"
        },
        {
          "url": "https://git.kernel.org/stable/c/df805c1d085b7a96077f0964185764c87060950d"
        },
        {
          "url": "https://git.kernel.org/stable/c/4242db36de99de734cc1f60e5edd86cda7e598c6"
        },
        {
          "url": "https://git.kernel.org/stable/c/1baaeb6adecb9691748c0253dab6ddd19a2b4e9e"
        },
        {
          "url": "https://git.kernel.org/stable/c/6ee946077607d7783ae6709a899213fc4fe08f35"
        },
        {
          "url": "https://git.kernel.org/stable/c/9d1bc155802943e92c57a5fb923d23edfbf0b525"
        },
        {
          "url": "https://git.kernel.org/stable/c/fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/a035766f970bde2d4298346a31a80685be5c0205"
        }
      ],
      "title": "wifi: b43legacy: enforce bounds check on firmware key index in RX path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46163",
    "datePublished": "2026-05-28T09:36:18.946Z",
    "dateReserved": "2026-05-13T15:03:33.102Z",
    "dateUpdated": "2026-06-01T16:19:20.697Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}