CVE-2024-26894

In the Linux kernel, the following vulnerability has been resolved: ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit() After unregistering the CPU idle device, the memory associated with it is not freed, leading to a memory leak: unreferenced object 0xffff896282f6c000 (size 1024): comm "swapper/0", pid 1, jiffies 4294893170 hex dump (first 32 bytes): 00 00 00 00 0b 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 8836a742): [ ] kmalloc_trace+0x29d/0x340 [ ] acpi_processor_power_init+0xf3/0x1c0 [ ] __acpi_processor_start+0xd3/0xf0 [ ] acpi_processor_start+0x2c/0x50 [ ] really_probe+0xe2/0x480 [ ] __driver_probe_device+0x78/0x160 [ ] driver_probe_device+0x1f/0x90 [ ] __driver_attach+0xce/0x1c0 [ ] bus_for_each_dev+0x70/0xc0 [ ] bus_add_driver+0x112/0x210 [ ] driver_register+0x55/0x100 [ ] acpi_processor_driver_init+0x3b/0xc0 [ ] do_one_initcall+0x41/0x300 [ ] kernel_init_freeable+0x320/0x470 [ ] kernel_init+0x16/0x1b0 [ ] ret_from_fork+0x2d/0x50 Fix this by freeing the CPU idle device after unregistering it.