CVE-2026-46084

CVEs › CVE-2026-46084

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/mana_ib: Disable RX steering on RSS QP destroy When an RSS QP is destroyed (e.g. DPDK exit), mana_ib_destroy_qp_rss() destroys the RX WQ objects but does not disable vPort RX steering in firmware. This leaves stale steering configuration that still points to the destroyed RX objects. If traffic continues to arrive (e.g. peer VM is still transmitting) and the VF interface is subsequently brought up (mana_open), the firmware may deliver completions using stale CQ IDs from the old RX objects. These CQ IDs can be reused by the ethernet driver for new TX CQs, causing RX completions to land on TX CQs: WARNING: mana_poll_tx_cq+0x1b8/0x220 [mana] (is_sq == false) WARNING: mana_gd_process_eq_events+0x209/0x290 (cq_table lookup fails) Fix this by disabling vPort RX steering before destroying RX WQ objects. Note that mana_fence_rqs() cannot be used here because the fence completion is delivered on the CQ, which is polled by user-mode (e.g. DPDK) and not visible to the kernel driver. Refactor the disable logic into a shared mana_disable_vport_rx() in mana_en, exported for use by mana_ib, replacing the duplicate code. The ethernet driver's mana_dealloc_queues() is also updated to call this common function.

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:N/I:H/A:H
Effective score: 7.1 / 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: 2026-05-27 12:58 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/46xxx/CVE-2026-46084.json
Linked Threat: CVE-2026-46084 — CVE-2026-46084

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 14:17:29 UTC
NVD last modified: 2026-06-24 17:12:13 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: 2.88% vs all CVEs — higher = more likely to be exploited, as of 2026-07-15

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

NVD / KEV / EPSS data refreshed 2026-07-16 04:38 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-2026-32467
Assigner: Linux
Published: May 27, 2026, 12:58:25 PM
Updated: Jun 14, 2026, 5:53:09 PM
EUVD base score: 0.0 / 10
EUVD-reported EPSS: 0.1300
Vendors: Linux
Products: Linux (patch: 7.1)

Linux (0266a177631d4c6b963b5b12dd986a8c5abdbf06 <6a2d6273b6c3581ce7b90ce17b5cbb4efd19438f)

Linux (patch: 0)

Linux (0266a177631d4c6b963b5b12dd986a8c5abdbf06 <dbeb256e8dd87233d891b170c0b32a6466467036)

Linux (0266a177631d4c6b963b5b12dd986a8c5abdbf06 <8ba804869382ce307f2a15f5f6f2adfd791f41dc)

Linux (patch: 7.0.4)

Linux (0266a177631d4c6b963b5b12dd986a8c5abdbf06 <f1ccc4d500a0b87a5599343fc2f798048836e184)

Linux (patch: 7.1-rc1)

Linux (patch: 6.6.140)

Linux (6.2)

Linux (0266a177631d4c6b963b5b12dd986a8c5abdbf06 <3be5ed233de03b00ae868cfc06e95331d8d9007c)

Linux (patch: 6.18.27)

Linux (patch: 6.12.86)
Aliases: GHSA-996r-prhc-hfj8

ENISA description: In the Linux kernel, the following vulnerability has been resolved: RDMA/mana_ib: Disable RX steering on RSS QP destroy When an RSS QP is destroyed (e.g. DPDK exit), mana_ib_destroy_qp_rss() destroys the RX WQ objects but does not disable vPort RX steering in firmware. This leaves stale steering configuration that still points to the destroyed RX objects. If traffic continues to arrive (e.g. peer VM is still transmitting) and the VF interface is subsequently brought up (mana_open), the firmware may deliver completions using stale CQ IDs from the old RX objects. These CQ IDs can be reused by the ethernet driver for new TX CQs, causing RX completions to land on TX CQs: WARNING: mana_poll_tx_cq+0x1b8/0x220 [mana] (is_sq == false) WARNING: mana_gd_process_eq_events+0x209/0x290 (cq_table lookup fails) Fix this by disabling vPort RX steering before destroying RX WQ objects. Note that mana_fence_rqs() cannot be used here because the fence completion is delivered on the CQ, which is polled by user-mode (e.g. DPDK) and not visible to the kernel driver. Refactor the disable logic into a shared mana_disable_vport_rx() in mana_en, exported for use by mana_ib, replacing the duplicate code. The ethernet driver's mana_dealloc_queues() is also updated to call this common function.

EUVD references (5)

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:N/I:H/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	`0266a177631d4c6b963b5b12dd986a8c5abdbf06` (affected), `0266a177631d4c6b963b5b12dd986a8c5abdbf06` (affected), `0266a177631d4c6b963b5b12dd986a8c5abdbf06` (affected), `0266a177631d4c6b963b5b12dd986a8c5abdbf06` (affected), `0266a177631d4c6b963b5b12dd986a8c5abdbf06` (affected)	—
Linux	Linux	`6.2` (affected), `0` (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 (5)

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

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.

MSRC update guide: CVE-2026-46084 msrc
None Available msrc
https://git.kernel.org/stable/c/8ba804869382ce307f2a15f5f6f2adfd791f41dc tenable:git.kernel.org
https://git.kernel.org/stable/c/dbeb256e8dd87233d891b170c0b32a6466467036 tenable:git.kernel.org
https://git.kernel.org/stable/c/f1ccc4d500a0b87a5599343fc2f798048836e184 tenable:git.kernel.org
https://nvd.nist.gov/vuln/detail/CVE-2026-46084 tenable:nvd.nist.gov
https://www.cve.org/CVERecord?id=CVE-2026-46084 tenable:www.cve.org
https://git.kernel.org/stable/c/3be5ed233de03b00ae868cfc06e95331d8d9007c tenable:git.kernel.org
https://www.first.org/epss/ tenable:www.first.org
https://git.kernel.org/stable/c/6a2d6273b6c3581ce7b90ce17b5cbb4efd19438f tenable:git.kernel.org

NVD-tagged references (5)

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/3be5ed233de03b00ae868cfc06e95331d8d9007c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/6a2d6273b6c3581ce7b90ce17b5cbb4efd19438f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/8ba804869382ce307f2a15f5f6f2adfd791f41dc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/dbeb256e8dd87233d891b170c0b32a6466467036 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/f1ccc4d500a0b87a5599343fc2f798048836e184 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch

Remediations (20)

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

Microsoft and Adobe Patch Tuesday, April 2026 Security Update Review

web:blog.qualys.com

With Qualys Policy Audit's out-of-the-box mitigation or Compensatory Controls, which reduce the risk of a vulnerability being exploited because the remediation ( fix / patch ) cannot be done immediately, these security controls are not recommended by any industry standards, such as CIS and DISA-STIG.

2026-06-04 00:11 UTC
Fortinet Security Update - Patch for Multiple Vulnerabilities That ...

web:cybersecuritynews.com

Fortinet released a sweeping security advisory on March 10, 2026 , addressing eleven vulnerabilities across its core enterprise products, including FortiManager, FortiAnalyzer, FortiSwitchAXFixed, and FortiSandbox.

2026-06-04 00:11 UTC
Patch Tuesday, May 2026 Edition - Krebs on Security

web:krebsonsecurity.com

Microsoft expects that exploitation is more likely. May's Patch Tuesday is a welcome respite from April, which saw Microsoft fix a near-record 167 security flaws.

2026-06-04 00:11 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 00:11 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 00:11 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 00:11 UTC
Oracle's first monthly patch release fixes 35 flaws, including 11 rated ...

web:www.csoonline.com

Oracle has released the first security fixes in its new monthly Critical Security Patch Update (CSPU) cycle, designed to address urgent vulnerabilities that can't wait for the company's ...

2026-06-04 00:11 UTC
Riot says "congrats on your $6k paperweights" as new Valorant anti ...

web:www.gamesradar.com

The latest Vanguard patch is apparently ruthless Valorant's brand of cheat prevention, known as Vanguard, has been somewhat contentious since the FPS launched in 2020. Employing kernel-level ...

2026-06-04 00:11 UTC
Text Form of Oracle CSPU May 2026 Risk Matrices

web:www.oracle.com

Text Form of Oracle Critical Security Patch Update - May 2026 Risk Matrices This document provides the text form of the May 2026 Advisory Risk Matrices. Please note that the CVE IDs in this document correspond to the same CVE IDs in the May 2026 Advisory. This page contains the following text format Risk Matrices: Oracle Database Server

2026-06-04 00:11 UTC
VirusTotal - Home

web:www.virustotal.com

Streamline your investigations with Google Threat Intelligence Agentic and the new Dark Web (DDW) module. Perform hunting and pivoting across forums using natural language or specific modifiers. Bridge threat actor identities and map global operations easy.

2026-06-04 00:11 UTC
Pennsylvania Access To Criminal History - Home - pa

web:epatch.pa.gov

Why does PATCH exist? Its purpose is to better enable the public to obtain criminal history record checks. The repository was created and is maintained in accordance with Pennsylvania's Criminal History Information Act contained in Chapter 91 of Title 18, Crimes Code. This Act also directs the Pennsylvania State Police (PSP) to disseminate criminal history data to criminal justice agencies ...

2026-06-19 02:28 UTC
Critical Security Vulnerabilities Alert: Latest CVE Updates and Patch ...

web:hackerdesk.com

Critical Security Vulnerabilities Alert: Latest CVE Updates and Patch Management Strategies for April 2026 This report details critical security vulnerabilities disclosed in April 2026 , including severe flaws in Fortinet, FileZen, and Microsoft products. Organizations are urged to prioritize patching based on risk assessment and leverage compensating controls to mitigate immediate threats ...

2026-06-19 02:28 UTC
Security Update Guide - Microsoft Security Response Center

web:msrc.microsoft.com

Security Update Guide - Microsoft Security Response Center

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

web:nvd.nist.gov

The NVD is the U.S. government repository of standards based vulnerability management data represented using the Security Content Automation Protocol (SCAP). This data enables automation of vulnerability management, security measurement, and compliance. The NVD includes databases of security checklist references, security-related software flaws, product names, and impact metrics. For ...

2026-06-19 02:28 UTC
The Official Fix Chocolate Bar | Dubai's Viral Chocolate Bars

web:officialfixdessertchocolatier.com

Indulge in Dubai's viral chocolate bars with FIX Dessert Chocolatier. Shop our hero collection featuring Baklawa, Knafeh, Biscoff, and more. Fast delivery in Dubai & Abu Dhabi. Order now!

2026-06-19 02:28 UTC
Microsoft April 2026 Patch Tuesday fixes 167 flaws, 2 zero-days

web:www.bleepingcomputer.com

Today is Microsoft's April 2026 Patch Tuesday with security updates for 167 flaws, including 2 zero-day vulnerabilities.

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
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 ...

2026-06-19 02:28 UTC
Oracle Critical Security Patch Update Advisory - May 2026

web:www.oracle.com

Prior Critical Patch Update and Critical Security Patch Update advisories should be reviewed for information regarding earlier published security patches. Refer to Critical Patch Updates, Critical Security Patch Updates, Security Alerts and Bulletins for information about Oracle Security advisories.

2026-06-19 02:28 UTC
patch.moe - Age Verification

web:www.patch.moe

Age Verification Are you 18 years or older? YES NO

2026-06-19 02:28 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-46084.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/mana/qp.c",
            "drivers/net/ethernet/microsoft/mana/mana_en.c",
            "include/net/mana/mana.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6a2d6273b6c3581ce7b90ce17b5cbb4efd19438f",
              "status": "affected",
              "version": "0266a177631d4c6b963b5b12dd986a8c5abdbf06",
              "versionType": "git"
            },
            {
              "lessThan": "f1ccc4d500a0b87a5599343fc2f798048836e184",
              "status": "affected",
              "version": "0266a177631d4c6b963b5b12dd986a8c5abdbf06",
              "versionType": "git"
            },
            {
              "lessThan": "8ba804869382ce307f2a15f5f6f2adfd791f41dc",
              "status": "affected",
              "version": "0266a177631d4c6b963b5b12dd986a8c5abdbf06",
              "versionType": "git"
            },
            {
              "lessThan": "3be5ed233de03b00ae868cfc06e95331d8d9007c",
              "status": "affected",
              "version": "0266a177631d4c6b963b5b12dd986a8c5abdbf06",
              "versionType": "git"
            },
            {
              "lessThan": "dbeb256e8dd87233d891b170c0b32a6466467036",
              "status": "affected",
              "version": "0266a177631d4c6b963b5b12dd986a8c5abdbf06",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/mana/qp.c",
            "drivers/net/ethernet/microsoft/mana/mana_en.c",
            "include/net/mana/mana.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "lessThan": "6.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.27",
              "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": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.86",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.27",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.4",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1-rc1",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mana_ib: Disable RX steering on RSS QP destroy\n\nWhen an RSS QP is destroyed (e.g. DPDK exit), mana_ib_destroy_qp_rss()\ndestroys the RX WQ objects but does not disable vPort RX steering in\nfirmware. This leaves stale steering configuration that still points to\nthe destroyed RX objects.\n\nIf traffic continues to arrive (e.g. peer VM is still transmitting) and\nthe VF interface is subsequently brought up (mana_open), the firmware\nmay deliver completions using stale CQ IDs from the old RX objects.\nThese CQ IDs can be reused by the ethernet driver for new TX CQs,\ncausing RX completions to land on TX CQs:\n\n  WARNING: mana_poll_tx_cq+0x1b8/0x220 [mana]  (is_sq == false)\n  WARNING: mana_gd_process_eq_events+0x209/0x290 (cq_table lookup fails)\n\nFix this by disabling vPort RX steering before destroying RX WQ objects.\nNote that mana_fence_rqs() cannot be used here because the fence\ncompletion is delivered on the CQ, which is polled by user-mode (e.g.\nDPDK) and not visible to the kernel driver.\n\nRefactor the disable logic into a shared mana_disable_vport_rx() in\nmana_en, exported for use by mana_ib, replacing the duplicate code.\nThe ethernet driver's mana_dealloc_queues() is also updated to call\nthis common function."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:58:25.435Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6a2d6273b6c3581ce7b90ce17b5cbb4efd19438f"
        },
        {
          "url": "https://git.kernel.org/stable/c/f1ccc4d500a0b87a5599343fc2f798048836e184"
        },
        {
          "url": "https://git.kernel.org/stable/c/8ba804869382ce307f2a15f5f6f2adfd791f41dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/3be5ed233de03b00ae868cfc06e95331d8d9007c"
        },
        {
          "url": "https://git.kernel.org/stable/c/dbeb256e8dd87233d891b170c0b32a6466467036"
        }
      ],
      "title": "RDMA/mana_ib: Disable RX steering on RSS QP destroy",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46084",
    "datePublished": "2026-05-27T12:58:25.435Z",
    "dateReserved": "2026-05-13T15:03:33.096Z",
    "dateUpdated": "2026-05-27T12:58:25.435Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}