CVE-2024-26974
Status: ModifiedHigh (7)—
In the Linux kernel, the following vulnerability has been resolved:
crypto: qat - resolve race condition during AER recovery
During the PCI AER system's error recovery process, the kernel driver may encounter a race condition with freeing the reset_data structure's memory. If the device restart will take more than 10 seconds the function scheduling that restart will exit due to a timeout, and the reset_data structure will be freed. However, this data structure is used for completion notification after the restart is completed, which leads to a UAF bug.
This results in a KFENCE bug notice.
To resolve this race condition, the memory associated to the container of the work_struct is freed on the worker if the timeout expired, otherwise on the function that schedules the worker.
Read full descriptionShow less
The timeout detection can be done by checking if the caller is still waiting for completion or not by using completion_done() function.
Technical details traces, logs and code from the original report
BUG: KFENCE: use-after-free read in adf_device_reset_worker+0x38/0xa0 [intel_qat] Use-after-free read at 0x00000000bc56fddf (in kfence-#142): adf_device_reset_worker+0x38/0xa0 [intel_qat] process_one_work+0x173/0x340
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Base score: 7
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 0.20%
- Percentile among all scored CVEs: 9
- Score date: 10/8/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (2)
CWEs
- CWE-367, CWE-416
References
- https://git.kernel.org/stable/c/0c2cf5142bfb634c0ef0a1a69cdf37950747d0be
- https://git.kernel.org/stable/c/226fc408c5fcd23cc4186f05ea3a09a7a9aef2f7
- https://git.kernel.org/stable/c/4ae5a97781ce7d6ecc9c7055396535815b64ca4f
- https://git.kernel.org/stable/c/7d42e097607c4d246d99225bf2b195b6167a210c
- https://git.kernel.org/stable/c/8a5a7611ccc7b1fba8d933a9f22a2e76859d94dc
- https://git.kernel.org/stable/c/8e81cd58aee14a470891733181a47d123193ba81
- https://git.kernel.org/stable/c/bb279ead42263e9fb09480f02a4247b2c287d828
- https://git.kernel.org/stable/c/d03092550f526a79cf1ade7f0dfa74906f39eb71
- https://git.kernel.org/stable/c/daba62d9eeddcc5b1081be7d348ca836c83c59d7
- https://git.kernel.org/stable/c/0c2cf5142bfb634c0ef0a1a69cdf37950747d0be
- https://git.kernel.org/stable/c/226fc408c5fcd23cc4186f05ea3a09a7a9aef2f7
- https://git.kernel.org/stable/c/4ae5a97781ce7d6ecc9c7055396535815b64ca4f
- https://git.kernel.org/stable/c/7d42e097607c4d246d99225bf2b195b6167a210c
- https://git.kernel.org/stable/c/8a5a7611ccc7b1fba8d933a9f22a2e76859d94dc
- https://git.kernel.org/stable/c/8e81cd58aee14a470891733181a47d123193ba81
- https://git.kernel.org/stable/c/bb279ead42263e9fb09480f02a4247b2c287d828
- https://git.kernel.org/stable/c/d03092550f526a79cf1ade7f0dfa74906f39eb71
- https://git.kernel.org/stable/c/daba62d9eeddcc5b1081be7d348ca836c83c59d7
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
Raw JSON (NVD)
Show
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qat - resolve race condition during AER recovery\n\nDuring the PCI AER system's error recovery process, the kernel driver\nmay encounter a race condition with freeing the reset_data structure's\nmemory. If the device restart will take more than 10 seconds the function\nscheduling that restart will exit due to a timeout, and the reset_data\nstructure will be freed. However, this data structure is used for\ncompletion notification after the restart is completed, which leads\nto a UAF bug.\n\nThis results in a KFENCE bug notice.\n\n BUG: KFENCE: use-after-free read in adf_device_reset_worker+0x38/0xa0 [intel_qat]\n Use-after-free read at 0x00000000bc56fddf (in kfence-#142):\n adf_device_reset_worker+0x38/0xa0 [intel_qat]\n process_one_work+0x173/0x340\n\nTo resolve this race condition, the memory associated to the container\nof the work_struct is freed on the worker if the timeout expired,\notherwise on the function that schedules the worker.\nThe timeout detection can be done by checking if the caller is\nstill waiting for completion or not by using completion_done() function."
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"value": "En el kernel de Linux, se resolvió la siguiente vulnerabilidad: crypto: qat: resuelve la condición de ejecución durante la recuperación de AER Durante el proceso de recuperación de errores del sistema PCI AER, el controlador del kernel puede encontrar una condición de ejecución al liberar la memoria de la estructura reset_data. Si el reinicio del dispositivo demora más de 10 segundos, la función que programa el reinicio se cerrará debido a un tiempo de espera y se liberará la estructura reset_data. Sin embargo, esta estructura de datos se utiliza para la notificación de finalización después de que se completa el reinicio, lo que genera un error de UAF. Esto da como resultado un aviso de error de KFENCE. ERROR: KFENCE: lectura de uso después de liberación en adf_device_reset_worker+0x38/0xa0 [intel_qat] Lectura de uso después de liberación en 0x00000000bc56fddf (en kfence-#142): adf_device_reset_worker+0x38/0xa0 [intel_qat] Process_one_work+0x173/0x340 Para resolver En esta condición de ejecución, la memoria asociada al contenedor de work_struct se libera en el trabajador si el tiempo de espera expiró; en caso contrario, en la función que programa al trabajador. La detección del tiempo de espera se puede realizar comprobando si la persona que llama todavía está esperando que finalice o no mediante la función complete_done()."
}
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