GHSA-Q5PF-P6C7-Q44J

Vulnerability from github – Published: 2025-10-21 12:31 – Updated: 2025-10-21 12:31
VLAI?
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
Show details on source website
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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"
    }
  ]
}


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