CVE-2024-56623

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.6.74

Description A use-after-free issue has been resolved in the Linux kernel, specifically in the scsi: qla2xxx module. This issue occurs when the dpc thread is terminated using the UNLOADING flag and kthread stop simultaneously, causing a system crash with a stack trace warning of use-after-free. The UNLOADING flag is removed to terminate dpc thread, and kthread stop is used as the main signal to exit dpc thread. The issue is observed on HP ProLiant DL380p Gen8 systems with BIOS P70 08/20/2012.

Recommendations To resolve this issue, update the Linux kernel to version 6.6.74 or later. As a temporary workaround, consider disabling the qla2xxx module until a patch is available. Restrict access to the dpc thread to minimize the risk of exploitation. Avoid using the UNLOADING flag to terminate dpc thread until the issue is resolved.