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GHSA-QQ9J-C8R5-5XF6

Vulnerability from github – Published: 2025-05-01 15:31 – Updated: 2025-11-10 21:30

Details

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

btrfs: zoned: clone zoned device info when cloning a device

When cloning a btrfs_device, we're not cloning the associated btrfs_zoned_device_info structure of the device in case of a zoned filesystem.

Later on this leads to a NULL pointer dereference when accessing the device's zone_info for instance when setting a zone as active.

This was uncovered by fstests' testcase btrfs/161.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49833"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-01T15:16:06Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: clone zoned device info when cloning a device\n\nWhen cloning a btrfs_device, we\u0027re not cloning the associated\nbtrfs_zoned_device_info structure of the device in case of a zoned\nfilesystem.\n\nLater on this leads to a NULL pointer dereference when accessing the\ndevice\u0027s zone_info for instance when setting a zone as active.\n\nThis was uncovered by fstests\u0027 testcase btrfs/161.",
  "id": "GHSA-qq9j-c8r5-5xf6",
  "modified": "2025-11-10T21:30:28Z",
  "published": "2025-05-01T15:31:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49833"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21e61ec6d0bb786818490e926aa9aeb4de95ad0d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad88cabcec942c033f980cd1e28d56ecdaf5f3b8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49833 (GCVE-0-2022-49833)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:09 – Updated: 2026-08-15 12:22

Title

btrfs: zoned: clone zoned device info when cloning a device

Summary

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: clone zoned device info when cloning a device When cloning a btrfs_device, we're not cloning the associated btrfs_zoned_device_info structure of the device in case of a zoned filesystem. Later on this leads to a NULL pointer dereference when accessing the device's zone_info for instance when setting a zone as active. This was uncovered by fstests' testcase btrfs/161.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/ad88cabcec942c033…
https://git.kernel.org/stable/c/21e61ec6d0bb78681…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7365104236ade0bf22edd7724c8fd438b0342ee4 , < ad88cabcec942c033f980cd1e28d56ecdaf5f3b8 (git) Affected: 7365104236ade0bf22edd7724c8fd438b0342ee4 , < 21e61ec6d0bb786818490e926aa9aeb4de95ad0d (git)
Linux	Linux	Affected: 5.12 Unaffected: 0 , < 5.12 (semver) Unaffected: 6.0.9 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/volumes.c",
            "fs/btrfs/zoned.c",
            "fs/btrfs/zoned.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ad88cabcec942c033f980cd1e28d56ecdaf5f3b8",
              "status": "affected",
              "version": "7365104236ade0bf22edd7724c8fd438b0342ee4",
              "versionType": "git"
            },
            {
              "lessThan": "21e61ec6d0bb786818490e926aa9aeb4de95ad0d",
              "status": "affected",
              "version": "7365104236ade0bf22edd7724c8fd438b0342ee4",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/volumes.c",
            "fs/btrfs/zoned.c",
            "fs/btrfs/zoned.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
              "lessThan": "5.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.9",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: clone zoned device info when cloning a device\n\nWhen cloning a btrfs_device, we\u0027re not cloning the associated\nbtrfs_zoned_device_info structure of the device in case of a zoned\nfilesystem.\n\nLater on this leads to a NULL pointer dereference when accessing the\ndevice\u0027s zone_info for instance when setting a zone as active.\n\nThis was uncovered by fstests\u0027 testcase btrfs/161."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-15T12:22:58.972Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ad88cabcec942c033f980cd1e28d56ecdaf5f3b8"
        },
        {
          "url": "https://git.kernel.org/stable/c/21e61ec6d0bb786818490e926aa9aeb4de95ad0d"
        }
      ],
      "title": "btrfs: zoned: clone zoned device info when cloning a device",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49833",
    "datePublished": "2025-05-01T14:09:51.387Z",
    "dateReserved": "2025-05-01T14:05:17.228Z",
    "dateUpdated": "2026-08-15T12:22:58.972Z",
    "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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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