CVE-2023-52791 (GCVE-0-2023-52791)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:31 – Updated: 2026-05-11 19:33
VLAI
Title
i2c: core: Run atomic i2c xfer when !preemptible
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.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-17 17:36 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6847 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: bae1d3a05a8b99bd748168bbf8155a1d047c562e , < 25eb381a736e7ae39a4245ef5c96484eb1073809 (git)
Affected: bae1d3a05a8b99bd748168bbf8155a1d047c562e , < 25284c46b657f48c0f3880a2e0706c70d81182c0 (git)
Affected: bae1d3a05a8b99bd748168bbf8155a1d047c562e , < f6237afabc349c1c7909db00e15d2816519e0d2b (git)
Affected: bae1d3a05a8b99bd748168bbf8155a1d047c562e , < 185f3617adc8fe45e40489b458f03911f0dec46c (git)
Affected: bae1d3a05a8b99bd748168bbf8155a1d047c562e , < 8c3fa52a46ff4d208cefb1a462ec94e0043a91e1 (git)
Affected: bae1d3a05a8b99bd748168bbf8155a1d047c562e , < 3473cf43b9068b9dfef2f545f833f33c6a544b91 (git)
Affected: bae1d3a05a8b99bd748168bbf8155a1d047c562e , < aa49c90894d06e18a1ee7c095edbd2f37c232d02 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.4.262 , ≤ 5.4.* (semver)
Unaffected: 5.10.202 , ≤ 5.10.* (semver)
Unaffected: 5.15.140 , ≤ 5.15.* (semver)
Unaffected: 6.1.64 , ≤ 6.1.* (semver)
Unaffected: 6.5.13 , ≤ 6.5.* (semver)
Unaffected: 6.6.3 , ≤ 6.6.* (semver)
Unaffected: 6.7 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "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."
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      "current_release_date": "2026-10-29T08:04:15+00:00",
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      "product_status:fixed": "709",
      "product_status:known_not_affected": "50",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: i2c: core: Run atomic i2c xfer when !preemptible",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52791.json",
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              "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."
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        "dateReserved": "2024-05-21T15:19:24.241Z",
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  }
}



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