Red Hat: CVE-2024-40956: kernel: dmaengine: idxd: Fix possible Use-After-Free in irq_process_work_list (Multiple Advisories)

Red Hat: CVE-2024-40956: kernel: dmaengine: idxd: Fix possible Use-After-Free in irq_process_work_list (Multiple Advisories)

Severity

4

CVSS

(AV:L/AC:L/Au:M/C:N/I:N/A:C)

Published

07/12/2024

Created

09/07/2024

Added

09/06/2024

Modified

12/12/2024

Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix possible Use-After-Free in irq_process_work_list Use list_for_each_entry_safe() to allow iterating through the list and deleting the entry in the iteration process. The descriptor is freed via idxd_desc_complete() and there's a slight chance may cause issue for the list iterator when the descriptor is reused by another thread without it being deleted from the list.

Solution(s)

• redhat-upgrade-kernel
• redhat-upgrade-kernel-rt

References

• CVE-2024-40956
• RHSA-2024:6267
• RHSA-2024:6268
• RHSA-2024:9546