fkie_cve-2024-35974
Vulnerability from fkie_nvd
Published
2024-05-20 10:15
Modified
2025-09-24 18:16
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: block: fix q->blkg_list corruption during disk rebind Multiple gendisk instances can allocated/added for single request queue in case of disk rebind. blkg may still stay in q->blkg_list when calling blkcg_init_disk() for rebind, then q->blkg_list becomes corrupted. Fix the list corruption issue by: - add blkg_init_queue() to initialize q->blkg_list & q->blkcg_mutex only - move calling blkg_init_queue() into blk_alloc_queue() The list corruption should be started since commit f1c006f1c685 ("blk-cgroup: synchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()") which delays removing blkg from q->blkg_list into blkg_free_workfn().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/740ffad95ca8033bd6e080ed337655b13b4d38acPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/858c489d81d659af17a4d11cfaad2afb42e47a76Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8b8ace080319a866f5dfe9da8e665ae51d971c54Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/740ffad95ca8033bd6e080ed337655b13b4d38acPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/858c489d81d659af17a4d11cfaad2afb42e47a76Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8b8ace080319a866f5dfe9da8e665ae51d971c54Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.9
linux linux_kernel 6.9
linux linux_kernel 6.9


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "82AC1371-DE49-41EF-8ECB-FE2F89374F0A",
              "versionEndExcluding": "6.6.28",
              "versionStartIncluding": "5.18",
              "vulnerable": true
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix q-\u003eblkg_list corruption during disk rebind\n\nMultiple gendisk instances can allocated/added for single request queue\nin case of disk rebind. blkg may still stay in q-\u003eblkg_list when calling\nblkcg_init_disk() for rebind, then q-\u003eblkg_list becomes corrupted.\n\nFix the list corruption issue by:\n\n- add blkg_init_queue() to initialize q-\u003eblkg_list \u0026 q-\u003eblkcg_mutex only\n- move calling blkg_init_queue() into blk_alloc_queue()\n\nThe list corruption should be started since commit f1c006f1c685 (\"blk-cgroup:\nsynchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()\")\nwhich delays removing blkg from q-\u003eblkg_list into blkg_free_workfn()."
    },
    {
      "lang": "es",
      "value": " En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: bloque: corrige la corrupci\u00f3n de q-\u0026gt;blkg_list durante la revinculaci\u00f3n del disco. Se pueden asignar/agregar m\u00faltiples instancias de gendisk para una \u00fanica cola de solicitudes en caso de volver a vincular el disco. Es posible que blkg a\u00fan permanezca en q-\u0026gt;blkg_list cuando se llama a blkcg_init_disk() para volver a vincular, entonces q-\u0026gt;blkg_list se corrompe. Solucione el problema de corrupci\u00f3n de la lista: - agregue blkg_init_queue() para inicializar q-\u0026gt;blkg_list \u0026amp; q-\u0026gt;blkcg_mutex solamente - mueva la llamada a blkg_init_queue() a blk_alloc_queue() La corrupci\u00f3n de la lista debe iniciarse desde la confirmaci\u00f3n f1c006f1c685 (\"blk-cgroup: sincronizar pd_free_fn() de blkg_free_workfn() y blkcg_deactivate_policy()\") que retrasa la eliminaci\u00f3n de blkg de q-\u0026gt;blkg_list en blkg_free_workfn()."
    }
  ],
  "id": "CVE-2024-35974",
  "lastModified": "2025-09-24T18:16:54.997",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-05-20T10:15:12.147",
  "references": [
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  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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