Overview
In the Linux kernel, the following vulnerability has been resolved:
scsi: ufs: qcom: Only free platform MSIs when ESI is enabled
Otherwise, it will result in a NULL pointer dereference as below:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008
Call trace:
mutex_lock+0xc/0x54
platform_device_msi_free_irqs_all+0x14/0x20
ufs_qcom_remove+0x34/0x48 [ufs_qcom]
platform_remove+0x28/0x44
device_remove+0x4c/0x80
device_release_driver_internal+0xd8/0x178
driver_detach+0x50/0x9c
bus_remove_driver+0x6c/0xbc
driver_unregister+0x30/0x60
platform_driver_unregister+0x14/0x20
ufs_qcom_pltform_exit+0x18/0xb94 [ufs_qcom]
__arm64_sys_delete_module+0x180/0x260
invoke_syscall+0x44/0x100
el0_svc_common.constprop.0+0xc0/0xe0
do_el0_svc+0x1c/0x28
el0_svc+0x34/0xdc
el0t_64_sync_handler+0xc0/0xc4
el0t_64_sync+0x190/0x194