CVE-2024-56621 (GCVE-0-2024-56621)
Vulnerability from cvelistv5
Published
2024-12-27 14:51
Modified
2025-05-04 10:00
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Cancel RTC work during ufshcd_remove() Currently, RTC work is only cancelled during __ufshcd_wl_suspend(). When ufshcd is removed in ufshcd_remove(), RTC work is not cancelled. Due to this, any further trigger of the RTC work after ufshcd_remove() would result in a NULL pointer dereference as below: Unable to handle kernel NULL pointer dereference at virtual address 00000000000002a4 Workqueue: events ufshcd_rtc_work Call trace: _raw_spin_lock_irqsave+0x34/0x8c pm_runtime_get_if_active+0x24/0xb4 ufshcd_rtc_work+0x124/0x19c process_scheduled_works+0x18c/0x2d8 worker_thread+0x144/0x280 kthread+0x11c/0x128 ret_from_fork+0x10/0x20 Since RTC work accesses the ufshcd internal structures, it should be cancelled when ufshcd is removed. So do that in ufshcd_remove(), as per the order in ufshcd_init().
References
Impacted products
Vendor Product Version
Linux Linux Version: 06701a545e9a3c4e007cff6872a074bf97c40619
Version: 6bf999e0eb41850d5c857102535d5c53b2ede224
Version: 6bf999e0eb41850d5c857102535d5c53b2ede224
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/ufs/core/ufshcd.c"
          ],
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          "vendor": "Linux",
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              "version": "6.13",
              "versionType": "original_commit_for_fix"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: core: Cancel RTC work during ufshcd_remove()\n\nCurrently, RTC work is only cancelled during __ufshcd_wl_suspend(). When\nufshcd is removed in ufshcd_remove(), RTC work is not cancelled. Due to\nthis, any further trigger of the RTC work after ufshcd_remove() would\nresult in a NULL pointer dereference as below:\n\nUnable to handle kernel NULL pointer dereference at virtual address 00000000000002a4\nWorkqueue: events ufshcd_rtc_work\nCall trace:\n _raw_spin_lock_irqsave+0x34/0x8c\n pm_runtime_get_if_active+0x24/0xb4\n ufshcd_rtc_work+0x124/0x19c\n process_scheduled_works+0x18c/0x2d8\n worker_thread+0x144/0x280\n kthread+0x11c/0x128\n ret_from_fork+0x10/0x20\n\nSince RTC work accesses the ufshcd internal structures, it should be cancelled\nwhen ufshcd is removed. So do that in ufshcd_remove(), as per the order in\nufshcd_init()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T10:00:08.838Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/2e7a3bb0331efb292e0fb022c36bc592137f0520"
        },
        {
          "url": "https://git.kernel.org/stable/c/1695c4361d35b7bdadd7b34f99c9c07741e181e5"
        }
      ],
      "title": "scsi: ufs: core: Cancel RTC work during ufshcd_remove()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56621",
    "datePublished": "2024-12-27T14:51:24.948Z",
    "dateReserved": "2024-12-27T14:03:06.016Z",
    "dateUpdated": "2025-05-04T10:00:08.838Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-56621\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-27T15:15:21.637\",\"lastModified\":\"2025-03-07T18:15:45.237\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nscsi: ufs: core: Cancel RTC work during ufshcd_remove()\\n\\nCurrently, RTC work is only cancelled during __ufshcd_wl_suspend(). When\\nufshcd is removed in ufshcd_remove(), RTC work is not cancelled. Due to\\nthis, any further trigger of the RTC work after ufshcd_remove() would\\nresult in a NULL pointer dereference as below:\\n\\nUnable to handle kernel NULL pointer dereference at virtual address 00000000000002a4\\nWorkqueue: events ufshcd_rtc_work\\nCall trace:\\n _raw_spin_lock_irqsave+0x34/0x8c\\n pm_runtime_get_if_active+0x24/0xb4\\n ufshcd_rtc_work+0x124/0x19c\\n process_scheduled_works+0x18c/0x2d8\\n worker_thread+0x144/0x280\\n kthread+0x11c/0x128\\n ret_from_fork+0x10/0x20\\n\\nSince RTC work accesses the ufshcd internal structures, it should be cancelled\\nwhen ufshcd is removed. So do that in ufshcd_remove(), as per the order in\\nufshcd_init().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: ufs: core: Cancelar el trabajo de RTC durante ufshcd_remove() Actualmente, el trabajo de RTC solo se cancela durante __ufshcd_wl_suspend(). Cuando se elimina ufshcd en ufshcd_remove(), el trabajo de RTC no se cancela. Debido a esto, cualquier activaci\u00f3n adicional del trabajo de RTC despu\u00e9s de ufshcd_remove() dar\u00eda como resultado una desreferencia de puntero NULL como se muestra a continuaci\u00f3n: No se puede gestionar la desreferencia de puntero NULL del n\u00facleo en la direcci\u00f3n virtual 00000000000002a4 Cola de trabajo: eventos ufshcd_rtc_work Rastreo de llamadas: _raw_spin_lock_irqsave+0x34/0x8c pm_runtime_get_if_active+0x24/0xb4 ufshcd_rtc_work+0x124/0x19c process_scheduled_works+0x18c/0x2d8 worker_thread+0x144/0x280 kthread+0x11c/0x128 ret_from_fork+0x10/0x20 Dado que el trabajo de RTC accede a las estructuras internas de ufshcd, se debe cancelar cuando se elimina ufshcd. Haga esto en ufshcd_remove(), seg\u00fan el orden en ufshcd_init().\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.8\",\"versionEndExcluding\":\"6.12.5\",\"matchCriteriaId\":\"C58B98F0-EB8D-4B95-8BFE-2D99DDAF308D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"62567B3C-6CEE-46D0-BC2E-B3717FBF7D13\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1695c4361d35b7bdadd7b34f99c9c07741e181e5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2e7a3bb0331efb292e0fb022c36bc592137f0520\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/57479e37d3f69efee2f0678568274db773284bc8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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