Linux Kernel SCSI PM8001 Tag Leak Vulnerability

A vulnerability in the Linux kernel's SCSI PM8001 driver has been addressed, concerning improper management of tags during error handling. In several functions, including 'pm8001_chip_set_dev_state_req()' and 'pm8001_chip_fw_flash_update_req()', the driver failed to release allocated tags when command building encountered errors. This oversight could lead to resource leaks. Additionally, the 'pm8001_exec_internal_task_abort()' function was corrected to free tags associated with abort requests when the chip's task abort method failed.

Impact

The vulnerability could cause memory leaks by failing to release allocated tags, potentially leading to degraded system performance or resource exhaustion.