CVE-2024-26974 Affecting kernel-debug-core package, versions <0:4.18.0-477.70.1.el8_8
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDEBUGCORE-7892248
- published 4 Sep 2024
- disclosed 1 May 2024
Introduced: 1 May 2024
CVE-2024-26974 Open this link in a new tabHow to fix?
Upgrade RHEL:8 kernel-debug-core to version 0:4.18.0-477.70.1.el8_8 or higher.
This issue was patched in RHSA-2024:6206.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug-core package and not the kernel-debug-core package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
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://access.redhat.com/security/cve/CVE-2024-26974
- 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