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CVE-2026-45974

📛 CVE Title

btrfs: fix invalid leaf access in btrfs_quota_enable() if ref key not found

⬇ Download JSON ⚠ View as Threat

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix invalid leaf access in btrfs_quota_enable() if ref key not found If btrfs_search_slot_for_read() returns 1, it means we did not find any key greater than or equals to the key we asked for, meaning we have reached the end of the tree and therefore the path is not valid. If this happens we need to break out of the loop and stop, instead of continuing and accessing an invalid path.

Overview

State
PUBLISHED
Assigner (CNA)
Linux
CVSS severity
high
CVSS score
CVSS 8.4 / 10 8.4 8.4 / 10
CVSS vector
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Effective score
8.4 / 10 HIGH source: CNA overview
CWE(s)
—
Reserved
2026-05-13
Published
2026-05-27 12:18 UTC
Last updated
2026-05-27 12:18 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/45xxx/CVE-2026-45974.json
Linked Threat
CVE-2026-45974 — CVE-2026-45974

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 14:17:14 UTC
NVD last modified
2026-06-17 10:52:49 UTC
NVD CVSS v3.1
CVSS 5.5 / 10 5.5 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
0.0013 (probability of exploitation in next 30 days)
EPSS percentile
2.81% vs all CVEs — higher = more likely to be exploited, as of 2026-07-15

NVD / KEV / EPSS data refreshed 2026-07-16 08:14 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-2026-32258
Assigner
Linux
Published
May 27, 2026, 12:18:33 PM
Updated
May 27, 2026, 12:18:33 PM
EUVD base score
0.0 / 10
EUVD-reported EPSS
0.1300
Vendors
Linux
Products
Linux (5223cc60b40ae525ae6c94e98824129f1a5b4ae5 <b2bd557b75b760e4b9d209112bda19314bd64558)
Linux (5223cc60b40ae525ae6c94e98824129f1a5b4ae5 <d7cf2314dd5e8661c05d076cd627eea9a7f76616)
Linux (patch: 0)
Linux (5223cc60b40ae525ae6c94e98824129f1a5b4ae5 <0761447f6f51e1c7997960d8e6559337deed6729)
Linux (5223cc60b40ae525ae6c94e98824129f1a5b4ae5 <1ee1d006c9fe4d6be5527ab1c84216b80cccbe40)
Linux (5223cc60b40ae525ae6c94e98824129f1a5b4ae5 <fd4913a53e3b54ad7e161847291439fe445d6356)
Linux (5223cc60b40ae525ae6c94e98824129f1a5b4ae5 <ecb7c2484cfc83a93658907580035a8adf1e0a92)
Linux (5223cc60b40ae525ae6c94e98824129f1a5b4ae5 <023545e272f369d487e6a986c1e321c6e04be1da)
Linux (ecce1be9f2a366990d0e75dd249fb324e83c34a9)
Linux (patch: 5.15.202)
Linux (patch: 6.6.128)
Linux (5223cc60b40ae525ae6c94e98824129f1a5b4ae5 <b5b8ade9da452086e78f5d519b90d3769e354853)
Linux (patch: 6.19.4)
Linux (patch: 6.12.75)
Linux (5.9.7 <5.10)
Linux (patch: 6.18.14)
Linux (patch: 7.0)
Linux (5.10)
Linux (patch: 5.10.252)
Linux (patch: 6.1.165)
Aliases
GHSA-9f93-r4x7-fg5m

ENISA description: In the Linux kernel, the following vulnerability has been resolved: btrfs: fix invalid leaf access in btrfs_quota_enable() if ref key not found If btrfs_search_slot_for_read() returns 1, it means we did not find any key greater than or equals to the key we asked for, meaning we have reached the end of the tree and therefore the path is not valid. If this happens we need to break out of the loop and stop, instead of continuing and accessing an invalid path.

EUVD references (8)

Affected products (2)
VendorProductVersionsPlatforms
Linux Linux 5223cc60b40ae525ae6c94e98824129f1a5b4ae5 (affected), 5223cc60b40ae525ae6c94e98824129f1a5b4ae5 (affected), 5223cc60b40ae525ae6c94e98824129f1a5b4ae5 (affected), 5223cc60b40ae525ae6c94e98824129f1a5b4ae5 (affected), 5223cc60b40ae525ae6c94e98824129f1a5b4ae5 (affected), 5223cc60b40ae525ae6c94e98824129f1a5b4ae5 (affected), 5223cc60b40ae525ae6c94e98824129f1a5b4ae5 (affected), 5223cc60b40ae525ae6c94e98824129f1a5b4ae5 (affected), ecce1be9f2a366990d0e75dd249fb324e83c34a9 (affected), 5.9.7 (affected) —
Linux Linux 5.10 (affected), 0 (unaffected), 5.10.252 (unaffected), 5.15.202 (unaffected), 6.1.165 (unaffected), 6.6.128 (unaffected), 6.12.75 (unaffected), 6.18.14 (unaffected), 6.19.4 (unaffected), 7.0 (unaffected) —

Affected products — CPE 2.3 (8) 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:5.10:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10:rc6:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10:rc7:*:*:*:*:*:*

Vendor references (8)

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

Web references (11)

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

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.

Remediations (17)

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

  • Mitigate RedSun Zero-Day Without A Patch | Qualys
    web:blog.qualys.com

    Key Takeaways RedSun is a critical zero-day vulnerability in Microsoft Defender that allows low-privileged users to gain SYSTEM access No patch is currently available, leaving all Defender-enabled Windows systems potentially exposed Qualys VMDR detects affected assets instantly (QID 92382) TruRisk™ Eliminate enables immediate mitigation , removing exploitability without waiting for a fix ...

    2026-06-04 00:14 UTC
  • Adobe Commerce 2.4.7 Security Patch Release Notes | Adobe Commerce
    web:experienceleague.adobe.com

    Learn about security bug fixes, security enhancements, and other security related updates included in the security patch releases for Adobe Commerce version 2.4.7.

    2026-06-04 00:14 UTC
  • Nvd - Cve-2026-41097
    web:nvd.nist.gov

    Official websites use .gov A .gov website belongs to an official government organization in the United States.

    2026-06-04 00:14 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 00:14 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 00:14 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.

    2026-06-04 00:14 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 00:14 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.

    2026-06-04 00:14 UTC
  • "This update broke BitLocker for me" — Windows 11's April patch is ...
    web:www.windowscentral.com

    A faulty BitLocker configuration is forcing some PCs into BitLocker recovery mode after the April 2026 update, but there's a workaround to resolve this issue.

    2026-06-04 00:14 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 00:14 UTC
  • 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.

    2026-06-19 02:27 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.

    2026-06-19 02:27 UTC
  • Windows 11, version 23H2 known issues and notifications
    web:learn.microsoft.com

    As of November 11, 2025, Home and Pro editions of Windows 11, version 23H2 have reached end of servicing. Enterprise and Education editions of version 23H2 will continue to receive monthly security updates until November 10, 2026 .

    2026-06-19 02:27 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 02:27 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.

    2026-06-19 02:27 UTC
  • AI Found 18 OpenSSL Vulnerabilities. Now Your Team Has to Patch Them ...
    web:www.puppet.com

    AI-driven OpenSSL discoveries are shrinking patch windows. See how Puppet helps teams find, patch , and continuously enforce remediation at scale.

    2026-06-19 02:27 UTC
  • OpenSSL Patches High-Severity Vulnerability Found With AI
    web:www.securityweek.com

    The latest OpenSSL releases patch 18 vulnerabilities, including a high-severity issue that could allow remote code execution.

    2026-06-19 02:27 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-45974.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/qgroup.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "023545e272f369d487e6a986c1e321c6e04be1da",
              "status": "affected",
              "version": "5223cc60b40ae525ae6c94e98824129f1a5b4ae5",
              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "1ee1d006c9fe4d6be5527ab1c84216b80cccbe40",
              "status": "affected",
              "version": "5223cc60b40ae525ae6c94e98824129f1a5b4ae5",
              "versionType": "git"
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            {
              "lessThan": "0761447f6f51e1c7997960d8e6559337deed6729",
              "status": "affected",
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              "versionType": "git"
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            {
              "lessThan": "d7cf2314dd5e8661c05d076cd627eea9a7f76616",
              "status": "affected",
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            {
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              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ecce1be9f2a366990d0e75dd249fb324e83c34a9",
              "versionType": "git"
            },
            {
              "lessThan": "5.10",
              "status": "affected",
              "version": "5.9.7",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/qgroup.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
              "lessThan": "5.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.252",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.202",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.165",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.252",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "5.15.202",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.165",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.128",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.4",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.9.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix invalid leaf access in btrfs_quota_enable() if ref key not found\n\nIf btrfs_search_slot_for_read() returns 1, it means we did not find any\nkey greater than or equals to the key we asked for, meaning we have\nreached the end of the tree and therefore the path is not valid. If\nthis happens we need to break out of the loop and stop, instead of\ncontinuing and accessing an invalid path."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:18:33.107Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/023545e272f369d487e6a986c1e321c6e04be1da"
        },
        {
          "url": "https://git.kernel.org/stable/c/fd4913a53e3b54ad7e161847291439fe445d6356"
        },
        {
          "url": "https://git.kernel.org/stable/c/b5b8ade9da452086e78f5d519b90d3769e354853"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ee1d006c9fe4d6be5527ab1c84216b80cccbe40"
        },
        {
          "url": "https://git.kernel.org/stable/c/0761447f6f51e1c7997960d8e6559337deed6729"
        },
        {
          "url": "https://git.kernel.org/stable/c/d7cf2314dd5e8661c05d076cd627eea9a7f76616"
        },
        {
          "url": "https://git.kernel.org/stable/c/b2bd557b75b760e4b9d209112bda19314bd64558"
        },
        {
          "url": "https://git.kernel.org/stable/c/ecb7c2484cfc83a93658907580035a8adf1e0a92"
        }
      ],
      "title": "btrfs: fix invalid leaf access in btrfs_quota_enable() if ref key not found",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45974",
    "datePublished": "2026-05-27T12:18:33.107Z",
    "dateReserved": "2026-05-13T15:03:33.090Z",
    "dateUpdated": "2026-05-27T12:18:33.107Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}