Vulnerabilidad en kernel de Linux (CVE-2024-46746)

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: HID: amd_sfh: liberar driver_data después de destruir el dispositivo HID Las devoluciones de llamadas del controlador HID ya no se invocan una vez que se ha invocado hid_destroy_device(). Por lo tanto, hid driver_data debería liberarse solo después de que la función hid_destroy_device() devuelta como driver_data se use en varias devoluciones de llamadas. Observé un fallo con el kernel 6.10.0 en mi T14s Gen 3, después de habilitar KASAN para depurar la asignación de memoria, obtuve este resultado: [ 13.050438] ======================================================================= [ 13.054060] ERROR: KASAN: slab-use-after-free en amd_sfh_get_report+0x3ec/0x530 [amd_sfh] [ 13.054809] psmouse serio1: trackpoint: firmware Synaptics TrackPoint: 0x02, botones: 3/3 [ 13.056432] Lectura de tamaño 8 en addr ffff88813152f408 por tarea (udev-worker)/479 [ 13.060970] CPU: 5 PID: 479 Comm: (udev-worker) No contaminado 6.10.0-arch1-2 #1 893bb55d7f0073f25c46adbb49eb3785fefd74b0 [ 13.063978] Nombre del hardware: LENOVO 21CQCTO1WW/21CQCTO1WW, BIOS R22ET70W (1.40 ) 21/03/2024 [ 13.067860] Seguimiento de llamadas: [ 13.069383] entrada: TPPS/2 Synaptics TrackPoint como /devices/platform/i8042/serio1/input/input8 [ [13.071486] [13.071492] dump_stack_lvl+0x5d/0x80 [13.074870] snd_hda_intel 0000:33:00.6: habilitando dispositivo (0000 -> 0002) [13.078296] ? amd_sfh_get_report+0x3ec/0x530 [amd_sfh 05f43221435b5205f734cd9da29399130f398a38] [13.082199] print_report+0x174/0x505 [13.085776] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [ 13.089367] ? srso_alias_return_thunk+0x5/0xfbef5 [ 13.093255] ? amd_sfh_get_report+0x3ec/0x530 [amd_sfh 05f43221435b5205f734cd9da29399130f398a38] [ 13.097464] kasan_report+0xc8/0x150 [ 13.101461] ? es: amd_sfh_get_report+0x3ec/0x530 [amd_sfh 05f43221435b5205f734cd9da29399130f398a38] [ 13.105802] amd_sfh_get_report+0x3ec/0x530 [amd_sfh 05f43221435b5205f734cd9da29399130f398a38] [ 13.110303] amdtp_hid_request+0xb8/0x110 [amd_sfh 05f43221435b5205f734cd9da29399130f398a38] [ 13.114879] ? srso_alias_return_thunk+0x5/0xfbef5 [ 13.119450] sensor_hub_get_feature+0x1d3/0x540 [hid_sensor_hub 3f13be3016ff415bea03008d45d99da837ee3082] [ 13.124097] hid_sensor_parse_common_attributes+0x4d0/0xad0 [hid_sensor_iio_common c3a5cbe93969c28b122609768bbe23efe52eb8f5] [ 13.127404] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [13.143602] ? __devm_add_action+0x167/0x1d0 [13.155061] hid_gyro_3d_probe+0x120/0x7f0 [hid_sensor_gyro_3d 63da36a143b775846ab2dbb86c343b401b5e3172] [13.158581] ? __driver_probe_device+0x18c/0x370 [ 13.171500] driver_probe_device+0x4a/0x120 [ 13.175000] __driver_attach+0x190/0x4a0 [ 13.178521] ? __pfx___driver_attach+0x10/0x10 [ 13.181771] bus_para_cada_dispositivo+0x106/0x180 [ 13.185033] ? __pfx__raw_spin_lock+0x10/0x10 [ 13.188229] ? __pfx_bus_para_cada_dispositivo+0x10/0x10 [ 13.191446] ? srso_alias_return_thunk+0x5/0xfbef5 [ 13.194382] bus_add_driver+0x29e/0x4d0 [ 13.197328] driver_register+0x1a5/0x360 [ 13.200283] ? __pfx_hid_gyro_3d_platform_driver_init+0x10/0x10 [hid_sensor_gyro_3d 63da36a143b775846ab2dbb86c343b401b5e3172] [ 13.203362] hacer_una_initcall+0xa7/0x380 [ 13.206432] ? __pfx_do_one_initcall+0x10/0x10 [ 13.210175] ? srso_alias_return_thunk+0x5/0xfbef5 [ 13.213211] ? kasan_unpoison+0x44/0x70 [ 13.216688] do_init_module+0x238/0x750 [ 13.2196 ---truncado---