FKIE_CVE-2023-52791

Vulnerability from fkie_nvd - Published: 2024-05-21 16:15 - Updated: 2025-09-26 16:59
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: i2c: core: Run atomic i2c xfer when !preemptible Since bae1d3a05a8b, i2c transfers are non-atomic if preemption is disabled. However, non-atomic i2c transfers require preemption (e.g. in wait_for_completion() while waiting for the DMA). panic() calls preempt_disable_notrace() before calling emergency_restart(). Therefore, if an i2c device is used for the restart, the xfer should be atomic. This avoids warnings like: [ 12.667612] WARNING: CPU: 1 PID: 1 at kernel/rcu/tree_plugin.h:318 rcu_note_context_switch+0x33c/0x6b0 [ 12.676926] Voluntary context switch within RCU read-side critical section! ... [ 12.742376] schedule_timeout from wait_for_completion_timeout+0x90/0x114 [ 12.749179] wait_for_completion_timeout from tegra_i2c_wait_completion+0x40/0x70 ... [ 12.994527] atomic_notifier_call_chain from machine_restart+0x34/0x58 [ 13.001050] machine_restart from panic+0x2a8/0x32c Use !preemptible() instead, which is basically the same check as pre-v5.2.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/185f3617adc8fe45e40489b458f03911f0dec46cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/25284c46b657f48c0f3880a2e0706c70d81182c0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/25eb381a736e7ae39a4245ef5c96484eb1073809Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3473cf43b9068b9dfef2f545f833f33c6a544b91Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8c3fa52a46ff4d208cefb1a462ec94e0043a91e1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aa49c90894d06e18a1ee7c095edbd2f37c232d02Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f6237afabc349c1c7909db00e15d2816519e0d2bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/185f3617adc8fe45e40489b458f03911f0dec46cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/25284c46b657f48c0f3880a2e0706c70d81182c0Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/25eb381a736e7ae39a4245ef5c96484eb1073809Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3473cf43b9068b9dfef2f545f833f33c6a544b91Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8c3fa52a46ff4d208cefb1a462ec94e0043a91e1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/aa49c90894d06e18a1ee7c095edbd2f37c232d02Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f6237afabc349c1c7909db00e15d2816519e0d2bPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F349BD5C-EF29-421C-8EFB-D6FC454DFA91",
              "versionEndExcluding": "5.4.262",
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              "vulnerable": true
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: core: Run atomic i2c xfer when !preemptible\n\nSince bae1d3a05a8b, i2c transfers are non-atomic if preemption is\ndisabled. However, non-atomic i2c transfers require preemption (e.g. in\nwait_for_completion() while waiting for the DMA).\n\npanic() calls preempt_disable_notrace() before calling\nemergency_restart(). Therefore, if an i2c device is used for the\nrestart, the xfer should be atomic. This avoids warnings like:\n\n[   12.667612] WARNING: CPU: 1 PID: 1 at kernel/rcu/tree_plugin.h:318 rcu_note_context_switch+0x33c/0x6b0\n[   12.676926] Voluntary context switch within RCU read-side critical section!\n...\n[   12.742376]  schedule_timeout from wait_for_completion_timeout+0x90/0x114\n[   12.749179]  wait_for_completion_timeout from tegra_i2c_wait_completion+0x40/0x70\n...\n[   12.994527]  atomic_notifier_call_chain from machine_restart+0x34/0x58\n[   13.001050]  machine_restart from panic+0x2a8/0x32c\n\nUse !preemptible() instead, which is basically the same check as\npre-v5.2."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: i2c: core: ejecute atomic i2c xfer cuando !preemptible. Desde bae1d3a05a8b, las transferencias i2c no son at\u00f3micas si la preferencia est\u00e1 deshabilitada. Sin embargo, las transferencias i2c no at\u00f3micas requieren preferencia (por ejemplo, en wait_for_completion() mientras se espera el DMA). p\u00e1nico() llama a preempt_disable_notrace() antes de llamar a emergence_restart(). Por lo tanto, si se utiliza un dispositivo i2c para el reinicio, el xfer debe ser at\u00f3mico. Esto evita advertencias como: [12.667612] ADVERTENCIA: CPU: 1 PID: 1 en kernel/rcu/tree_plugin.h:318 rcu_note_context_switch+0x33c/0x6b0 [12.676926] \u00a1Cambio de contexto voluntario dentro de la secci\u00f3n cr\u00edtica del lado de lectura de RCU! ... [12.742376] Schedule_timeout de wait_for_completion_timeout+0x90/0x114 [12.749179] wait_for_completion_timeout de tegra_i2c_wait_completion+0x40/0x70 ... [12.994527] atomic_notifier_call_chain de machine_restart+0x34/0x58 13.001050] machine_restart desde panic+0x2a8/0x32c Utilice !preemptible( ) en su lugar, que es b\u00e1sicamente la misma verificaci\u00f3n que la versi\u00f3n anterior a la v5.2."
    }
  ],
  "id": "CVE-2023-52791",
  "lastModified": "2025-09-26T16:59:41.203",
  "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": "2024-05-21T16:15:17.777",
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "value": "NVD-CWE-noinfo"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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