CVE-2024-44953

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> scsi: ufs: core: Fix deadlock during RTC update<br /> <br /> There is a deadlock when runtime suspend waits for the flush of RTC work,<br /> and the RTC work calls ufshcd_rpm_get_sync() to wait for runtime resume.<br /> <br /> Here is deadlock backtrace:<br /> <br /> kworker/0:1 D 4892.876354 10 10971 4859 0x4208060 0x8 10 0 120 670730152367<br /> ptr f0ffff80c2e40000 0 1 0x00000001 0x000000ff 0x000000ff 0x000000ff<br /> __switch_to+0x1a8/0x2d4<br /> __schedule+0x684/0xa98<br /> schedule+0x48/0xc8<br /> schedule_timeout+0x48/0x170<br /> do_wait_for_common+0x108/0x1b0<br /> wait_for_completion+0x44/0x60<br /> __flush_work+0x39c/0x424<br /> __cancel_work_sync+0xd8/0x208<br /> cancel_delayed_work_sync+0x14/0x28<br /> __ufshcd_wl_suspend+0x19c/0x480<br /> ufshcd_wl_runtime_suspend+0x3c/0x1d4<br /> scsi_runtime_suspend+0x78/0xc8<br /> __rpm_callback+0x94/0x3e0<br /> rpm_suspend+0x2d4/0x65c<br /> __pm_runtime_suspend+0x80/0x114<br /> scsi_runtime_idle+0x38/0x6c<br /> rpm_idle+0x264/0x338<br /> __pm_runtime_idle+0x80/0x110<br /> ufshcd_rtc_work+0x128/0x1e4<br /> process_one_work+0x26c/0x650<br /> worker_thread+0x260/0x3d8<br /> kthread+0x110/0x134<br /> ret_from_fork+0x10/0x20<br /> <br /> Skip updating RTC if RPM state is not RPM_ACTIVE.