Vulnerability-Lookup

GHSA-Q5PF-P6C7-Q44J

Vulnerability from github – Published: 2025-10-21 12:31 – Updated: 2025-10-21 12:31

Details

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

block: don't delete queue kobject before its children

kobjects aren't supposed to be deleted before their child kobjects are deleted. Apparently this is usually benign; however, a WARN will be triggered if one of the child kobjects has a named attribute group:

sysfs group 'modes' not found for kobject 'crypto'
WARNING: CPU: 0 PID: 1 at fs/sysfs/group.c:278 sysfs_remove_group+0x72/0x80
...
Call Trace:
  sysfs_remove_groups+0x29/0x40 fs/sysfs/group.c:312
  __kobject_del+0x20/0x80 lib/kobject.c:611
  kobject_cleanup+0xa4/0x140 lib/kobject.c:696
  kobject_release lib/kobject.c:736 [inline]
  kref_put include/linux/kref.h:65 [inline]
  kobject_put+0x53/0x70 lib/kobject.c:753
  blk_crypto_sysfs_unregister+0x10/0x20 block/blk-crypto-sysfs.c:159
  blk_unregister_queue+0xb0/0x110 block/blk-sysfs.c:962
  del_gendisk+0x117/0x250 block/genhd.c:610

Fix this by moving the kobject_del() and the corresponding kobject_uevent() to the correct place.

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-2022-49259"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:02Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: don\u0027t delete queue kobject before its children\n\nkobjects aren\u0027t supposed to be deleted before their child kobjects are\ndeleted.  Apparently this is usually benign; however, a WARN will be\ntriggered if one of the child kobjects has a named attribute group:\n\n    sysfs group \u0027modes\u0027 not found for kobject \u0027crypto\u0027\n    WARNING: CPU: 0 PID: 1 at fs/sysfs/group.c:278 sysfs_remove_group+0x72/0x80\n    ...\n    Call Trace:\n      sysfs_remove_groups+0x29/0x40 fs/sysfs/group.c:312\n      __kobject_del+0x20/0x80 lib/kobject.c:611\n      kobject_cleanup+0xa4/0x140 lib/kobject.c:696\n      kobject_release lib/kobject.c:736 [inline]\n      kref_put include/linux/kref.h:65 [inline]\n      kobject_put+0x53/0x70 lib/kobject.c:753\n      blk_crypto_sysfs_unregister+0x10/0x20 block/blk-crypto-sysfs.c:159\n      blk_unregister_queue+0xb0/0x110 block/blk-sysfs.c:962\n      del_gendisk+0x117/0x250 block/genhd.c:610\n\nFix this by moving the kobject_del() and the corresponding\nkobject_uevent() to the correct place.",
  "id": "GHSA-q5pf-p6c7-q44j",
  "modified": "2025-10-21T12:31:24Z",
  "published": "2025-10-21T12:31:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49259"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b5924a14d64487ebd51127b0358d06066ef5384"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f69288253e9fc7c495047720e523b9f1aba5712"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d7e32c8da45957326f56937e0471c686d1a7711"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/84fe3ca6e7910beb47ec13509d484f84fa2a41ad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b2001eb10f59363da930cdd6e086a2861986fa18"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf0cb8686e55d9c022944bc6ba9e19e832889e83"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/efaa0e969261e97c1fdd8e0338e5dd3ba5b9219c"
    }
  ],
  "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-2022-49259 (GCVE-0-2022-49259)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:56 – Updated: 2026-05-11 18:56

Title

block: don't delete queue kobject before its children

Summary

In the Linux kernel, the following vulnerability has been resolved: block: don't delete queue kobject before its children kobjects aren't supposed to be deleted before their child kobjects are deleted. Apparently this is usually benign; however, a WARN will be triggered if one of the child kobjects has a named attribute group: sysfs group 'modes' not found for kobject 'crypto' WARNING: CPU: 0 PID: 1 at fs/sysfs/group.c:278 sysfs_remove_group+0x72/0x80 ... Call Trace: sysfs_remove_groups+0x29/0x40 fs/sysfs/group.c:312 __kobject_del+0x20/0x80 lib/kobject.c:611 kobject_cleanup+0xa4/0x140 lib/kobject.c:696 kobject_release lib/kobject.c:736 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x53/0x70 lib/kobject.c:753 blk_crypto_sysfs_unregister+0x10/0x20 block/blk-crypto-sysfs.c:159 blk_unregister_queue+0xb0/0x110 block/blk-sysfs.c:962 del_gendisk+0x117/0x250 block/genhd.c:610 Fix this by moving the kobject_del() and the corresponding kobject_uevent() to the correct place.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/b2001eb10f59363da…
https://git.kernel.org/stable/c/84fe3ca6e7910beb4…
https://git.kernel.org/stable/c/0b5924a14d64487eb…
https://git.kernel.org/stable/c/efaa0e969261e97c1…
https://git.kernel.org/stable/c/cf0cb8686e55d9c02…
https://git.kernel.org/stable/c/3d7e32c8da4595732…
https://git.kernel.org/stable/c/0f69288253e9fc7c4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 2c2086afc2b8b974fac32cb028e73dc27bfae442 , < b2001eb10f59363da930cdd6e086a2861986fa18 (git) Affected: 2c2086afc2b8b974fac32cb028e73dc27bfae442 , < 84fe3ca6e7910beb47ec13509d484f84fa2a41ad (git) Affected: 2c2086afc2b8b974fac32cb028e73dc27bfae442 , < 0b5924a14d64487ebd51127b0358d06066ef5384 (git) Affected: 2c2086afc2b8b974fac32cb028e73dc27bfae442 , < efaa0e969261e97c1fdd8e0338e5dd3ba5b9219c (git) Affected: 2c2086afc2b8b974fac32cb028e73dc27bfae442 , < cf0cb8686e55d9c022944bc6ba9e19e832889e83 (git) Affected: 2c2086afc2b8b974fac32cb028e73dc27bfae442 , < 3d7e32c8da45957326f56937e0471c686d1a7711 (git) Affected: 2c2086afc2b8b974fac32cb028e73dc27bfae442 , < 0f69288253e9fc7c495047720e523b9f1aba5712 (git)
Linux	Linux	Affected: 4.16 Unaffected: 0 , < 4.16 (semver) Unaffected: 4.19.238 , ≤ 4.19.* (semver) Unaffected: 5.4.189 , ≤ 5.4.* (semver) Unaffected: 5.10.110 , ≤ 5.10.* (semver) Unaffected: 5.15.33 , ≤ 5.15.* (semver) Unaffected: 5.16.19 , ≤ 5.16.* (semver) Unaffected: 5.17.2 , ≤ 5.17.* (semver) Unaffected: 5.18 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
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}

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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