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: 2025-05-04 12:50

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

CWE

CWE-416 - Use After Free

Assigner

Linux

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

Vendor

Product

Version

Linux

Affected: 5533742c7cb1bc9b1f0bf401cc397d44a3a9e07a , < 7f77f3dab5066a7c9da73d72d1eee895ff84a8d5 (git)
Affected: 094f3d9314d67691cb21ba091c1b528f6e3c4893 , < 511c922c5bf6c8a166bea826e702336bc2424140 (git)
Affected: 761564d93c8265f65543acf0a576b32d66bfa26a , < cb1876fc33af26d00efdd473311f1b664c77c44e (git)
Affected: 64dc8c732f5c2b406cc752e6aaa1bd5471159cab , < b600de2d7d3a16f9007fad1bdae82a3951a26af2 (git)
Affected: b22fd72bfebda3956efc4431b60ddfc0a51e03e0 (git)

Linux

Affected: 5.15.86 , < 5.15.93 (semver)
Affected: 6.1.2 , < 6.1.11 (semver)

Show details on NVD website

JSON

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-52983",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-27T16:59:42.552227Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
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          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-27T17:08:22.246Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "block/bfq-cgroup.c",
            "block/bfq-iosched.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "versionType": "git"
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            {
              "lessThan": "511c922c5bf6c8a166bea826e702336bc2424140",
              "status": "affected",
              "version": "094f3d9314d67691cb21ba091c1b528f6e3c4893",
              "versionType": "git"
            },
            {
              "lessThan": "cb1876fc33af26d00efdd473311f1b664c77c44e",
              "status": "affected",
              "version": "761564d93c8265f65543acf0a576b32d66bfa26a",
              "versionType": "git"
            },
            {
              "lessThan": "b600de2d7d3a16f9007fad1bdae82a3951a26af2",
              "status": "affected",
              "version": "64dc8c732f5c2b406cc752e6aaa1bd5471159cab",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b22fd72bfebda3956efc4431b60ddfc0a51e03e0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "block/bfq-cgroup.c",
            "block/bfq-iosched.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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            },
            {
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              "status": "affected",
              "version": "6.1.2",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "5.15.86",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.11",
                  "versionStartIncluding": "6.1.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.0.16",
                  "vulnerable": true
                }
              ],
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              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T12:50:01.199Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/7f77f3dab5066a7c9da73d72d1eee895ff84a8d5"
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          "url": "https://git.kernel.org/stable/c/511c922c5bf6c8a166bea826e702336bc2424140"
        },
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          "url": "https://git.kernel.org/stable/c/cb1876fc33af26d00efdd473311f1b664c77c44e"
        },
        {
          "url": "https://git.kernel.org/stable/c/b600de2d7d3a16f9007fad1bdae82a3951a26af2"
        }
      ],
      "title": "block, bfq: fix uaf for bfqq in bic_set_bfqq()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52983",
    "datePublished": "2025-03-27T16:43:21.372Z",
    "dateReserved": "2025-03-27T16:40:15.740Z",
    "dateUpdated": "2025-05-04T12:50:01.199Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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-2Q9R-F82F-3G5X

CVE-2023-52983 (GCVE-0-2023-52983)

Tags

Sightings

Nomenclature