CVE-2022-48924

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> thermal: int340x: fix memory leak in int3400_notify()<br /> <br /> It is easy to hit the below memory leaks in my TigerLake platform:<br /> <br /> unreferenced object 0xffff927c8b91dbc0 (size 32):<br /> comm "kworker/0:2", pid 112, jiffies 4294893323 (age 83.604s)<br /> hex dump (first 32 bytes):<br /> 4e 41 4d 45 3d 49 4e 54 33 34 30 30 20 54 68 65 NAME=INT3400 The<br /> 72 6d 61 6c 00 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 rmal.kkkkkkkkkk.<br /> backtrace:<br /> [] __kmalloc_track_caller+0x2fe/0x4a0<br /> [] kvasprintf+0x65/0xd0<br /> [] kasprintf+0x4e/0x70<br /> [] int3400_notify+0x82/0x120 [int3400_thermal]<br /> [] acpi_ev_notify_dispatch+0x54/0x71<br /> [] acpi_os_execute_deferred+0x17/0x30<br /> [] process_one_work+0x21a/0x3f0<br /> [] worker_thread+0x4a/0x3b0<br /> [] kthread+0xfd/0x130<br /> [] ret_from_fork+0x1f/0x30<br /> <br /> Fix it by calling kfree() accordingly.