Vulnerability-Lookup

GHSA-J898-M92W-4243

Vulnerability from github – Published: 2025-09-16 15:32 – Updated: 2025-12-02 21:31

Details

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

blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none

After grabbing q->sysfs_lock, q->elevator may become NULL because of elevator switch.

Fix the NULL dereference on q->elevator by checking it with lock.

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-2023-53292"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-16T08:15:38Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-mq: fix NULL dereference on q-\u003eelevator in blk_mq_elv_switch_none\n\nAfter grabbing q-\u003esysfs_lock, q-\u003eelevator may become NULL because of\nelevator switch.\n\nFix the NULL dereference on q-\u003eelevator by checking it with lock.",
  "id": "GHSA-j898-m92w-4243",
  "modified": "2025-12-02T21:31:26Z",
  "published": "2025-09-16T15:32:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53292"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/245165658e1c9f95c0fecfe02b9b1ebd30a1198a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e977386521b71471e66ec2ba82efdfcc456adf2"
    }
  ],
  "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-2023-53292 (GCVE-0-2023-53292)

Vulnerability from cvelistv5 – Published: 2025-09-16 08:11 – Updated: 2026-01-14 18:12

Title

blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none

Summary

In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none After grabbing q->sysfs_lock, q->elevator may become NULL because of elevator switch. Fix the NULL dereference on q->elevator by checking it with lock.

Severity ?

5.5 (Medium)


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

CWE

CWE-476 - NULL Pointer Dereference

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/3e977386521b71471…
	https://git.kernel.org/stable/c/245165658e1c9f95c…

Impacted products

Vendor

Product

Version

Linux

Affected: 5fd7a84a09e640016fe106dd3e992f5210e23dc7 , < 3e977386521b71471e66ec2ba82efdfcc456adf2 (git)
Affected: 5fd7a84a09e640016fe106dd3e992f5210e23dc7 , < 245165658e1c9f95c0fecfe02b9b1ebd30a1198a (git)

Linux

Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.4.7 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
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              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
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              "scope": "UNCHANGED",
              "userInteraction": "NONE",
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Sightings

Author	Source	Type	Date

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-J898-M92W-4243

CVE-2023-53292 (GCVE-0-2023-53292)

Tags

Sightings

Nomenclature