github - ghsa-4v4x-mh67-4m6p

GHSA-4V4X-MH67-4M6P

Vulnerability from github – Published: 2025-02-27 21:32 – Updated: 2025-02-27 21:32

Details

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

blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx

blk_mq_run_hw_queues() could be run when there isn't queued request and after queue is cleaned up, at that time tagset is freed, because tagset lifetime is covered by driver, and often freed after blk_cleanup_queue() returns.

So don't touch ->tagset for figuring out current default hctx by the mapping built in request queue, so use-after-free on tagset can be avoided. Meantime this way should be fast than retrieving mapping from tagset.

Severity ?

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49377"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:14Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-mq: don\u0027t touch -\u003etagset in blk_mq_get_sq_hctx\n\nblk_mq_run_hw_queues() could be run when there isn\u0027t queued request and\nafter queue is cleaned up, at that time tagset is freed, because tagset\nlifetime is covered by driver, and often freed after blk_cleanup_queue()\nreturns.\n\nSo don\u0027t touch -\u003etagset for figuring out current default hctx by the mapping\nbuilt in request queue, so use-after-free on tagset can be avoided. Meantime\nthis way should be fast than retrieving mapping from tagset.",
  "id": "GHSA-4v4x-mh67-4m6p",
  "modified": "2025-02-27T21:32:13Z",
  "published": "2025-02-27T21:32:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49377"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d05426e2d5fd7df8afc866b78c36b37b00188b7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/70fdd922c7bf8949f8df109cf2635dff64c90392"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b140bac470b4f707cda59c7266214246238661df"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49377 (GCVE-0-2022-49377)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:11 – Updated: 2025-05-04 08:36

Summary

In the Linux kernel, the following vulnerability has been resolved: blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx blk_mq_run_hw_queues() could be run when there isn't queued request and after queue is cleaned up, at that time tagset is freed, because tagset lifetime is covered by driver, and often freed after blk_cleanup_queue() returns. So don't touch ->tagset for figuring out current default hctx by the mapping built in request queue, so use-after-free on tagset can be avoided. Meantime this way should be fast than retrieving mapping from tagset.

Severity ?

7.8 (High)


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

CWE

CWE-416 - Use After Free

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/460aa288c5cd0544d…
	https://git.kernel.org/stable/c/b140bac470b4f707c…
	https://git.kernel.org/stable/c/70fdd922c7bf8949f…
	https://git.kernel.org/stable/c/5d05426e2d5fd7df8…

Impacted products

Vendor

Product

Version

Linux

Affected: b6e68ee82585f2ee890b0a897a6aacbf49a467bb , < 460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff (git)
Affected: b6e68ee82585f2ee890b0a897a6aacbf49a467bb , < b140bac470b4f707cda59c7266214246238661df (git)
Affected: b6e68ee82585f2ee890b0a897a6aacbf49a467bb , < 70fdd922c7bf8949f8df109cf2635dff64c90392 (git)
Affected: b6e68ee82585f2ee890b0a897a6aacbf49a467bb , < 5d05426e2d5fd7df8afc866b78c36b37b00188b7 (git)

Linux

Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.15.47 , ≤ 5.15.* (semver)
Unaffected: 5.17.15 , ≤ 5.17.* (semver)
Unaffected: 5.18.4 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)

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JSON

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              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
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                {
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        {
          "lang": "en",
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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.

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GHSA-4V4X-MH67-4M6P

CVE-2022-49377 (GCVE-0-2022-49377)

Tags

Sightings

Nomenclature