FKIE_CVE-2024-36922

Vulnerability from fkie_nvd - Published: 2024-05-30 16:15 - Updated: 2025-10-01 13:52
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: wifi: iwlwifi: read txq->read_ptr under lock If we read txq->read_ptr without lock, we can read the same value twice, then obtain the lock, and reclaim from there to two different places, but crucially reclaim the same entry twice, resulting in the WARN_ONCE() a little later. Fix that by reading txq->read_ptr under lock.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/43d07103df670484cdd26f9588eabef80f69db89Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b83db8e756dec68a950ed2f056248b1704b3deaaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2ace6300600c634553657785dfe5ea0ed688ac2Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/43d07103df670484cdd26f9588eabef80f69db89Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b83db8e756dec68a950ed2f056248b1704b3deaaPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c2ace6300600c634553657785dfe5ea0ed688ac2Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.9
To clipboard 

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  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "E3E590E3-9122-405E-A816-1B69540EC77D",
              "versionEndExcluding": "6.6.31",
              "vulnerable": true
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: read txq-\u003eread_ptr under lock\n\nIf we read txq-\u003eread_ptr without lock, we can read the same\nvalue twice, then obtain the lock, and reclaim from there\nto two different places, but crucially reclaim the same\nentry twice, resulting in the WARN_ONCE() a little later.\nFix that by reading txq-\u003eread_ptr under lock."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: iwlwifi: leer txq-\u0026gt;read_ptr bajo bloqueo Si leemos txq-\u0026gt;read_ptr sin bloqueo, podemos leer el mismo valor dos veces, luego obtener el bloqueo y reclamar desde all\u00ed a dos lugares diferentes, pero fundamentalmente reclama la misma entrada dos veces, lo que resulta en WARN_ONCE() un poco m\u00e1s tarde. Solucione eso leyendo txq-\u0026gt;read_ptr bajo bloqueo."
    }
  ],
  "id": "CVE-2024-36922",
  "lastModified": "2025-10-01T13:52:14.343",
  "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"
      }
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  "published": "2024-05-30T16:15:15.470",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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