CVE-2026-43498

CVEs › CVE-2026-43498

Description

In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Disallow re-exporting imported GEM objects Prevent re-exporting of imported GEM buffers by adding a custom prime_handle_to_fd callback that checks if the object is imported and returns -EOPNOTSUPP if so. Re-exporting imported GEM buffers causes loss of buffer flags settings, leading to incorrect device access and data corruption.

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
CWE(s): —
Reserved: 2026-05-01
Published: 2026-05-21 12:17 UTC
Last updated: 2026-05-21 12:17 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/43xxx/CVE-2026-43498.json
Linked Threat: CVE-2026-43498 — CVE-2026-43498

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: 2026-05-21 13:16:19 UTC
NVD last modified: 2026-05-21 13:16:19 UTC
EPSS score: 0.0002 (probability of exploitation in next 30 days)
EPSS percentile: 5.24% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

NVD / KEV / EPSS data refreshed 2026-05-25 00:27 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-2026-31272
Assigner: Linux
Published: May 21, 2026, 12:17:48 PM
Updated: May 30, 2026, 10:45:17 AM
EUVD base score (CVSS 3.1): 7.8 / 10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EUVD-reported EPSS: 0.0200
Vendors: Linux
Products: Linux (patch: 7.0.7)

Linux (57557964b582238d5ee4b8538d1c4694f91c2186 <7dd57d7a6350770dfc283287125c409e995200e0)

Linux (patch: 7.1-rc3)

Linux (patch: 0)

Linux (57557964b582238d5ee4b8538d1c4694f91c2186 <3756043dd695bba34cc728cdc5688dcb49ac8043)

Linux (6.19)
Aliases: GHSA-p8xq-f97w-qv9j

ENISA description: In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Disallow re-exporting imported GEM objects Prevent re-exporting of imported GEM buffers by adding a custom prime_handle_to_fd callback that checks if the object is imported and returns -EOPNOTSUPP if so. Re-exporting imported GEM buffers causes loss of buffer flags settings, leading to incorrect device access and data corruption.

EUVD references (2)

Affected products (2)

Vendor	Product	Versions	Platforms
Linux	Linux	`57557964b582238d5ee4b8538d1c4694f91c2186` (affected), `57557964b582238d5ee4b8538d1c4694f91c2186` (affected)	—
Linux	Linux	`6.19` (affected), `0` (unaffected), `7.0.7` (unaffected), `7.1-rc3` (unaffected)	—

Vendor references (2)

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

Web references (5)

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/3756043dd695bba34cc728cdc5688dcb49ac8043 tenable:git.kernel.org
https://git.kernel.org/stable/c/7dd57d7a6350770dfc283287125c409e995200e0 tenable:git.kernel.org
https://nvd.nist.gov/vuln/detail/CVE-2026-43498 tenable:nvd.nist.gov
https://www.cve.org/CVERecord?id=CVE-2026-43498 tenable:www.cve.org
https://www.first.org/epss/ tenable:www.first.org

NVD-tagged references (2)

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/3756043dd695bba34cc728cdc5688dcb49ac8043 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7dd57d7a6350770dfc283287125c409e995200e0 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Remediations (16)

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

Microsoft patches two Defender zero-days under attack

web:aiweekly.co

Microsoft has disclosed two actively exploited zero-day vulnerabilities in Windows Defender, both confirmed in the wild before patches were available. CVE - 2026 -41091 sits inside the Malware Protection Engine and allows low-privileged attackers to escalate to SYSTEM access through improper link resolution, effectively turning the security tool itself into an attack surface. CVE - 2026 -45498 is a ...

2026-05-24 12:02 UTC
Microsoft Defender Zero-Day Vulnerabilities: CVE-2026-41091 and CVE ...

web:aviatrix.ai

Microsoft has disclosed two critical zero-day vulnerabilities in Defender, actively exploited before patches were released. Learn about CVE - 2026 -41091 and CVE - 2026 -45498 and how to protect your systems.

2026-05-24 12:02 UTC
CISA Warns of Exploited Microsoft Defender 0-Day Flaws

web:cyberpress.org

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two actively exploited Microsoft Defender vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, issuing an urgent remediation directive for federal agencies with a due date of June 3, 2026 .

2026-05-24 12:02 UTC
CISA Warns of Microsoft Defender 0-Day Vulnerabilities Exploited in Attacks

web:cybersecuritynews.com

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two critical Microsoft Defender vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, warning organizations of active exploitation risks. The flaws, tracked as CVE - 2026 -45498 and CVE - 2026 -41091, impact Microsoft Defender and could allow attackers to disrupt systems or escalate privileges. Both ...

2026-05-24 12:02 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.

2026-05-24 12:02 UTC
Microsoft Defender CVE-2026-41091 & CVE-2026-45498

web:thecyberexpress.com

Microsoft confirms active exploitation of CVE - 2026 -41091 and CVE - 2026 -45498 in Defender, with CVSS-rated risks, KEV listing, and urgent patches issued.

2026-05-24 12:02 UTC
Critical Microsoft Defender Vulnerabilities: How to Patch CVE-2026 ...

web:www.archynewsy.com

Understanding the Exploited Vulnerabilities The security risks involve two distinct CVE -tracked flaws that Microsoft has addressed in its latest updates: Critical Microsoft Defender Vulnerabilities Antimalware Platform CVE - 2026 -41091 (CVSS Score: 7.8): This vulnerability involves improper link resolution before file access, commonly known as "link following." By successfully exploiting ...

2026-05-24 12:02 UTC
2 New Microsoft Defender Zero-Days Exploited—Patch Now ... - Forbes

web:www.forbes.com

Microsoft has confirmed an emergency security update as CISA warns that two new Defender zero-days are being exploited by attackers.

2026-05-24 12:02 UTC
Microsoft Defender vulnerabilities exploited in the wild (CVE-2026 ...

web:www.helpnetsecurity.com

Attackers are actively exploiting two Microsoft Defender vulnerabilities ( CVE - 2026 -41091 and CVE - 2026 -45498), Microsoft acknowledged.

2026-05-24 12:02 UTC
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.

2026-05-24 12:02 UTC
Microsoft Defender CVE-2026-41091 and CVE-2026-45498 Exploited

web:blog.gridinsoft.com

Microsoft has confirmed exploitation of two Microsoft Defender vulnerabilities fixed in the May 2026 security update cycle. CVE - 2026 -41091 is an elevation-of-privilege flaw in the Microsoft Malware Protection Engine, while CVE - 2026 -45498 is a denial-of-service flaw in the Microsoft Defender Antimalware Platform . The first bug matters more for incident response because a local authorized ...

2026-06-03 22:32 UTC
CVE-2026-45498: Microsoft Defender Denial-of-Service Flaw - What It ...

web:integsec.com

Meta Description: CVE - 2026 -45498 is a high-severity denial-of-service flaw in Microsoft Defender that is actively exploited; learn the business risk and how to patch now.

2026-06-03 22:32 UTC
Microsoft Defender Vulnerabilities Added to CISA KEV (CVE-2026-41091 ...

web:op-c.net

CISA added two actively exploited Microsoft Defender vulnerabilities, CVE - 2026 -41091 and CVE - 2026 -45498, to its KEV catalog. Learn the risks and recommended actions.

2026-06-03 22:32 UTC
CVE-2026-45498: Verify Defender Antimalware Platform 4.18 Update Drift

web:windowsforum.com

The fix for CVE - 2026 -45498 is the platform version, not merely a signature update. Administrators should be looking for Microsoft Defender Antimalware Platform 4.18.26040.7 or later.

2026-06-03 22:32 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 ...

2026-06-03 22:32 UTC
Microsoft confirms two major Defender security issues - TechRadar

web:www.techradar.com

Microsoft patches two actively exploited zero‑day flaws in Defender, tracked as CVE‑2026‑41091 (privilege escalation) and CVE‑2026‑45498 (denial of service) Updates were shipped ...

2026-06-03 22:32 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-43498.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/accel/ivpu/ivpu_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3756043dd695bba34cc728cdc5688dcb49ac8043",
              "status": "affected",
              "version": "57557964b582238d5ee4b8538d1c4694f91c2186",
              "versionType": "git"
            },
            {
              "lessThan": "7dd57d7a6350770dfc283287125c409e995200e0",
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            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/accel/ivpu/ivpu_drv.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
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            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
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            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.7",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1-rc3",
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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\naccel/ivpu: Disallow re-exporting imported GEM objects\n\nPrevent re-exporting of imported GEM buffers by adding a custom\nprime_handle_to_fd callback that checks if the object is imported\nand returns -EOPNOTSUPP if so.\n\nRe-exporting imported GEM buffers causes loss of buffer flags settings,\nleading to incorrect device access and data corruption."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-21T12:17:48.550Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3756043dd695bba34cc728cdc5688dcb49ac8043"
        },
        {
          "url": "https://git.kernel.org/stable/c/7dd57d7a6350770dfc283287125c409e995200e0"
        }
      ],
      "title": "accel/ivpu: Disallow re-exporting imported GEM objects",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43498",
    "datePublished": "2026-05-21T12:17:48.550Z",
    "dateReserved": "2026-05-01T14:12:56.014Z",
    "dateUpdated": "2026-05-21T12:17:48.550Z",
    "state": "PUBLISHED"
  },
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