Vulnerability-Lookup

GHSA-2Q9R-F82F-3G5X

Vulnerability from github – Published: 2025-03-27 18:31 – Updated: 2025-03-27 18:31

Details

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

block, bfq: fix uaf for bfqq in bic_set_bfqq()

After commit 64dc8c732f5c ("block, bfq: fix possible uaf for 'bfqq->bic'"), bic->bfqq will be accessed in bic_set_bfqq(), however, in some context bic->bfqq will be freed, and bic_set_bfqq() is called with the freed bic->bfqq.

Fix the problem by always freeing bfqq after bic_set_bfqq().

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-2023-52983"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-27T17:15:45Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock, bfq: fix uaf for bfqq in bic_set_bfqq()\n\nAfter commit 64dc8c732f5c (\"block, bfq: fix possible uaf for \u0027bfqq-\u003ebic\u0027\"),\nbic-\u003ebfqq will be accessed in bic_set_bfqq(), however, in some context\nbic-\u003ebfqq will be freed, and bic_set_bfqq() is called with the freed\nbic-\u003ebfqq.\n\nFix the problem by always freeing bfqq after bic_set_bfqq().",
  "id": "GHSA-2q9r-f82f-3g5x",
  "modified": "2025-03-27T18:31:26Z",
  "published": "2025-03-27T18:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52983"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/511c922c5bf6c8a166bea826e702336bc2424140"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7f77f3dab5066a7c9da73d72d1eee895ff84a8d5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b600de2d7d3a16f9007fad1bdae82a3951a26af2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cb1876fc33af26d00efdd473311f1b664c77c44e"
    }
  ],
  "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-2023-52983 (GCVE-0-2023-52983)

Vulnerability from cvelistv5 – Published: 2025-03-27 16:43 – Updated: 2026-08-05 09:12

Title

block, bfq: fix uaf for bfqq in bic_set_bfqq()

Summary

In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix uaf for bfqq in bic_set_bfqq() After commit 64dc8c732f5c ("block, bfq: fix possible uaf for 'bfqq->bic'"), bic->bfqq will be accessed in bic_set_bfqq(), however, in some context bic->bfqq will be freed, and bic_set_bfqq() is called with the freed bic->bfqq. Fix the problem by always freeing bfqq after bic_set_bfqq().

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-27 16:59 UTC

CWE

CWE-416 - Use After Free

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/7f77f3dab5066a7c9…
https://git.kernel.org/stable/c/511c922c5bf6c8a16…
https://git.kernel.org/stable/c/cb1876fc33af26d00…
https://git.kernel.org/stable/c/b600de2d7d3a16f90…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 5533742c7cb1bc9b1f0bf401cc397d44a3a9e07a , < 7f77f3dab5066a7c9da73d72d1eee895ff84a8d5 (git) Affected: 094f3d9314d67691cb21ba091c1b528f6e3c4893 , < 511c922c5bf6c8a166bea826e702336bc2424140 (git) Affected: 761564d93c8265f65543acf0a576b32d66bfa26a , < cb1876fc33af26d00efdd473311f1b664c77c44e (git) Affected: 64dc8c732f5c2b406cc752e6aaa1bd5471159cab , < b600de2d7d3a16f9007fad1bdae82a3951a26af2 (git) Affected: b22fd72bfebda3956efc4431b60ddfc0a51e03e0 (git) Affected: 6.0.16 , < 6.1 (semver)
Linux	Linux	Affected: 5.15.86 , < 5.15.93 (semver) Affected: 6.1.2 , < 6.1.11 (semver)

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        "metrics": [
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              "confidentialityImpact": "HIGH",
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              "scope": "UNCHANGED",
              "userInteraction": "NONE",
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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.

Related by attack behaviour

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