Vulnerability-Lookup

GHSA-8R24-MQ27-R6CW

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-05-08 15:31

Details

In the Linux kernel, the following vulnerability has been resolved:

btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()

If overlay is used on top of btrfs, dentry->d_sb translates to overlay's super block and fsid assignment will lead to a crash.

Use file_inode(file)->i_sb to always get btrfs_sb.

Severity ?

9.1 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43117"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T10:16:25Z",
    "severity": "CRITICAL"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()\n\nIf overlay is used on top of btrfs, dentry-\u003ed_sb translates to overlay\u0027s\nsuper block and fsid assignment will lead to a crash.\n\nUse file_inode(file)-\u003ei_sb to always get btrfs_sb.",
  "id": "GHSA-8r24-mq27-r6cw",
  "modified": "2026-05-08T15:31:16Z",
  "published": "2026-05-06T12:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43117"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2e4adfaec97ee053ad1bdfb5036845e66f7e0d8a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/32372781d664a9b03c40343e96c29d0a6139f97d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a85b46db143fda5869e7d8df8f258ccef5fa1719"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c09a7446aab5773f38d6abb25fce99b8e1dfbc97"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d110d7cdb045715c0b45b0dfd974525bb38f653d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-43117 (GCVE-0-2026-43117)

Vulnerability from cvelistv5 – Published: 2026-05-06 07:40 – Updated: 2026-05-11 22:18

Title

btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()

Summary

In the Linux kernel, the following vulnerability has been resolved: btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file() If overlay is used on top of btrfs, dentry->d_sb translates to overlay's super block and fsid assignment will lead to a crash. Use file_inode(file)->i_sb to always get btrfs_sb.

Severity ?

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/c09a7446aab5773f3…
https://git.kernel.org/stable/c/32372781d664a9b03…
https://git.kernel.org/stable/c/2e4adfaec97ee053a…
https://git.kernel.org/stable/c/d110d7cdb045715c0…
https://git.kernel.org/stable/c/a85b46db143fda586…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: bc074524e123ded281cde25ebc5661910f9679e3 , < c09a7446aab5773f38d6abb25fce99b8e1dfbc97 (git) Affected: bc074524e123ded281cde25ebc5661910f9679e3 , < 32372781d664a9b03c40343e96c29d0a6139f97d (git) Affected: bc074524e123ded281cde25ebc5661910f9679e3 , < 2e4adfaec97ee053ad1bdfb5036845e66f7e0d8a (git) Affected: bc074524e123ded281cde25ebc5661910f9679e3 , < d110d7cdb045715c0b45b0dfd974525bb38f653d (git) Affected: bc074524e123ded281cde25ebc5661910f9679e3 , < a85b46db143fda5869e7d8df8f258ccef5fa1719 (git)
Linux	Linux	Affected: 4.8 Unaffected: 0 , < 4.8 (semver) Unaffected: 6.6.136 , ≤ 6.6.* (semver) Unaffected: 6.12.83 , ≤ 6.12.* (semver) Unaffected: 6.18.24 , ≤ 6.18.* (semver) Unaffected: 6.19.14 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/trace/events/btrfs.h"
          ],
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          "vendor": "Linux",
          "versions": [
            {
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              "versionType": "git"
            },
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              "version": "bc074524e123ded281cde25ebc5661910f9679e3",
              "versionType": "git"
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              "versionType": "git"
            },
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              "versionType": "git"
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        },
        {
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          "product": "Linux",
          "programFiles": [
            "include/trace/events/btrfs.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.8"
            },
            {
              "lessThan": "4.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.83",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.24",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.136",
                  "versionStartIncluding": "4.8",
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                },
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                {
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:18:05.180Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/a85b46db143fda5869e7d8df8f258ccef5fa1719"
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      ],
      "title": "btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43117",
    "datePublished": "2026-05-06T07:40:41.862Z",
    "dateReserved": "2026-05-01T14:12:55.987Z",
    "dateUpdated": "2026-05-11T22:18:05.180Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-8R24-MQ27-R6CW

CVE-2026-43117 (GCVE-0-2026-43117)

Tags

Sightings

Nomenclature