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CVE-2025-38374 (GCVE-0-2025-38374)

Vulnerability from cvelistv5 – Published: 2025-07-25 12:53 – Updated: 2026-05-11 21:26
VLAI
Title
optee: ffa: fix sleep in atomic context
Summary
In the Linux kernel, the following vulnerability has been resolved: optee: ffa: fix sleep in atomic context The OP-TEE driver registers the function notif_callback() for FF-A notifications. However, this function is called in an atomic context leading to errors like this when processing asynchronous notifications: | BUG: sleeping function called from invalid context at kernel/locking/mutex.c:258 | in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 9, name: kworker/0:0 | preempt_count: 1, expected: 0 | RCU nest depth: 0, expected: 0 | CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.14.0-00019-g657536ebe0aa #13 | Hardware name: linux,dummy-virt (DT) | Workqueue: ffa_pcpu_irq_notification notif_pcpu_irq_work_fn | Call trace: | show_stack+0x18/0x24 (C) | dump_stack_lvl+0x78/0x90 | dump_stack+0x18/0x24 | __might_resched+0x114/0x170 | __might_sleep+0x48/0x98 | mutex_lock+0x24/0x80 | optee_get_msg_arg+0x7c/0x21c | simple_call_with_arg+0x50/0xc0 | optee_do_bottom_half+0x14/0x20 | notif_callback+0x3c/0x48 | handle_notif_callbacks+0x9c/0xe0 | notif_get_and_handle+0x40/0x88 | generic_exec_single+0x80/0xc0 | smp_call_function_single+0xfc/0x1a0 | notif_pcpu_irq_work_fn+0x2c/0x38 | process_one_work+0x14c/0x2b4 | worker_thread+0x2e4/0x3e0 | kthread+0x13c/0x210 | ret_from_fork+0x10/0x20 Fix this by adding work queue to process the notification in a non-atomic context.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d0476a59de064205f4aaa8f7c6d6f32bc28a44d4 , < 5f28563f0c6862c99eb115c918421d9b73f137ad (git)
Affected: d0476a59de064205f4aaa8f7c6d6f32bc28a44d4 , < f27cf15783bd60063c6c97434cbd67ebd91d8db5 (git)
Affected: d0476a59de064205f4aaa8f7c6d6f32bc28a44d4 , < 312d02adb959ea199372f375ada06e0186f651e4 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.12.37 , ≤ 6.12.* (semver)
Unaffected: 6.15.6 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\noptee: ffa: fix sleep in atomic context\n\nThe OP-TEE driver registers the function notif_callback() for FF-A\nnotifications. However, this function is called in an atomic context\nleading to errors like this when processing asynchronous notifications:\n\n | BUG: sleeping function called from invalid context at kernel/locking/mutex.c:258\n | in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 9, name: kworker/0:0\n | preempt_count: 1, expected: 0\n | RCU nest depth: 0, expected: 0\n | CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.14.0-00019-g657536ebe0aa #13\n | Hardware name: linux,dummy-virt (DT)\n | Workqueue: ffa_pcpu_irq_notification notif_pcpu_irq_work_fn\n | Call trace:\n |  show_stack+0x18/0x24 (C)\n |  dump_stack_lvl+0x78/0x90\n |  dump_stack+0x18/0x24\n |  __might_resched+0x114/0x170\n |  __might_sleep+0x48/0x98\n |  mutex_lock+0x24/0x80\n |  optee_get_msg_arg+0x7c/0x21c\n |  simple_call_with_arg+0x50/0xc0\n |  optee_do_bottom_half+0x14/0x20\n |  notif_callback+0x3c/0x48\n |  handle_notif_callbacks+0x9c/0xe0\n |  notif_get_and_handle+0x40/0x88\n |  generic_exec_single+0x80/0xc0\n |  smp_call_function_single+0xfc/0x1a0\n |  notif_pcpu_irq_work_fn+0x2c/0x38\n |  process_one_work+0x14c/0x2b4\n |  worker_thread+0x2e4/0x3e0\n |  kthread+0x13c/0x210\n |  ret_from_fork+0x10/0x20\n\nFix this by adding work queue to process the notification in a\nnon-atomic context."
        }
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    "cveId": "CVE-2025-38374",
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    "dateReserved": "2025-04-16T04:51:24.009Z",
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However, this function is called in an atomic context\\nleading to errors like this when processing asynchronous notifications:\\n\\n | BUG: sleeping function called from invalid context at kernel/locking/mutex.c:258\\n | in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 9, name: kworker/0:0\\n | preempt_count: 1, expected: 0\\n | RCU nest depth: 0, expected: 0\\n | CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.14.0-00019-g657536ebe0aa #13\\n | Hardware name: linux,dummy-virt (DT)\\n | Workqueue: ffa_pcpu_irq_notification notif_pcpu_irq_work_fn\\n | Call trace:\\n |  show_stack+0x18/0x24 (C)\\n |  dump_stack_lvl+0x78/0x90\\n |  dump_stack+0x18/0x24\\n |  __might_resched+0x114/0x170\\n |  __might_sleep+0x48/0x98\\n |  mutex_lock+0x24/0x80\\n |  optee_get_msg_arg+0x7c/0x21c\\n |  simple_call_with_arg+0x50/0xc0\\n |  optee_do_bottom_half+0x14/0x20\\n |  notif_callback+0x3c/0x48\\n |  handle_notif_callbacks+0x9c/0xe0\\n |  notif_get_and_handle+0x40/0x88\\n |  generic_exec_single+0x80/0xc0\\n |  smp_call_function_single+0xfc/0x1a0\\n |  notif_pcpu_irq_work_fn+0x2c/0x38\\n |  process_one_work+0x14c/0x2b4\\n |  worker_thread+0x2e4/0x3e0\\n |  kthread+0x13c/0x210\\n |  ret_from_fork+0x10/0x20\\n\\nFix this by adding work queue to process the notification in a\\nnon-atomic context.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: optee: ffa: correcci\u00f3n de suspensi\u00f3n en contexto at\u00f3mico. El controlador OP-TEE registra la funci\u00f3n notif_callback() para las notificaciones FF-A. Sin embargo, esta funci\u00f3n se llama en un contexto at\u00f3mico, lo que genera errores como este al procesar notificaciones as\u00edncronas: | BUG: sleeping function called from invalid context at kernel/locking/mutex.c:258 | in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 9, name: kworker/0:0 | preempt_count: 1, expected: 0 | RCU nest depth: 0, expected: 0 | CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.14.0-00019-g657536ebe0aa #13 | Hardware name: linux,dummy-virt (DT) | Workqueue: ffa_pcpu_irq_notification notif_pcpu_irq_work_fn | Call trace: | show_stack+0x18/0x24 (C) | dump_stack_lvl+0x78/0x90 | dump_stack+0x18/0x24 | __might_resched+0x114/0x170 | __might_sleep+0x48/0x98 | mutex_lock+0x24/0x80 | optee_get_msg_arg+0x7c/0x21c | simple_call_with_arg+0x50/0xc0 | optee_do_bottom_half+0x14/0x20 | notif_callback+0x3c/0x48 | handle_notif_callbacks+0x9c/0xe0 | notif_get_and_handle+0x40/0x88 | generic_exec_single+0x80/0xc0 | smp_call_function_single+0xfc/0x1a0 | 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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:32:39+00:00",
      "cve": "CVE-2025-38374",
      "id": "CVE-2025-38374",
      "initial_release_date": "2025-07-25T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: optee: ffa: fix sleep in atomic context",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38374.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-12T16:49:03Z",
      "cve": "CVE-2025-38374",
      "id": "CVE-2025-38374",
      "initial_release_date": "2025-07-25T23:23:18Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "5",
      "product_status:known_not_affected": "555",
      "product_status:recommended": "154",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38374",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38374.json",
      "version": "33"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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