CVE-2020-36776

In the Linux kernel, the following vulnerability has been resolved: thermal/drivers/cpufreq_cooling: Fix slab OOB issue Slab OOB issue is scanned by KASAN in cpu_power_to_freq(). If power is limited below the power of OPP0 in EM table, it will cause slab out-of-bound issue with negative array index. Return the lowest frequency if limited power cannot found a suitable OPP in EM table to fix this issue. Backtrace: [ ] die+0x104/0x5ac [ ] bug_handler+0x64/0xd0 [ ] brk_handler+0x160/0x258 [ ] do_debug_exception+0x248/0x3f0 [ ] el1_dbg+0x14/0xbc [ ] __kasan_report+0x1dc/0x1e0 [ ] kasan_report+0x10/0x20 [ ] __asan_report_load8_noabort+0x18/0x28 [ ] cpufreq_power2state+0x180/0x43c [ ] power_actor_set_power+0x114/0x1d4 [ ] allocate_power+0xaec/0xde0 [ ] power_allocator_throttle+0x3ec/0x5a4 [ ] handle_thermal_trip+0x160/0x294 [ ] thermal_zone_device_check+0xe4/0x154 [ ] process_one_work+0x5e4/0xe28 [ ] worker_thread+0xa4c/0xfac [ ] kthread+0x33c/0x358 [ ] ret_from_fork+0xc/0x18