CVE-2024-26974

/// Technical 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 schedu

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References