CVE-2024-26974

medium

Description

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. 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 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. The timeout detection can be done by checking if the caller is still waiting for completion or not by using completion_done() function.

References

https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html

https://git.kernel.org/stable/c/daba62d9eeddcc5b1081be7d348ca836c83c59d7

https://git.kernel.org/stable/c/d03092550f526a79cf1ade7f0dfa74906f39eb71

https://git.kernel.org/stable/c/bb279ead42263e9fb09480f02a4247b2c287d828

https://git.kernel.org/stable/c/8e81cd58aee14a470891733181a47d123193ba81

https://git.kernel.org/stable/c/8a5a7611ccc7b1fba8d933a9f22a2e76859d94dc

https://git.kernel.org/stable/c/7d42e097607c4d246d99225bf2b195b6167a210c

https://git.kernel.org/stable/c/4ae5a97781ce7d6ecc9c7055396535815b64ca4f

https://git.kernel.org/stable/c/226fc408c5fcd23cc4186f05ea3a09a7a9aef2f7

https://git.kernel.org/stable/c/0c2cf5142bfb634c0ef0a1a69cdf37950747d0be

Details

Source: Mitre, NVD

Published: 2024-05-01

Updated: 2024-06-27

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:L/AC:H/Au:S/C:P/I:P/A:C

Severity: Medium

CVSS v3

Base Score: 5.8

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H

Severity: Medium