CVE-2026-68361

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> hwmon: (corsair-psu) Stop device IO before calling hid_hw_stop<br /> <br /> hid_hw_stop() does not stop the device IO.<br /> <br /> This results in a race condition between hid_input_report() and the point<br /> immediately following the execution of hid_device_io_start() within<br /> corsairpsu_probe(). If the probe operation fails after "io start" has<br /> been initiated, this race condition will result in a uaf vulnerability<br /> [1].<br /> <br /> CPU0 CPU1<br /> ==== ====<br /> corsairpsu_probe()<br /> hid_device_io_start()<br /> ... unlock driver_input_lock<br /> hid_hw_stop()<br /> kfree(hidraw) __hid_input_report()<br /> ... acquire driver_input_lock<br /> hid_report_raw_event()<br /> hidraw_report_event()<br /> ... access hidraw&amp;#39;s list_lock // trigger uaf<br /> <br /> Consequently, when corsairpsu_probe() fails and hid_hw_stop() needs to<br /> be executed, the io_started flag is first cleared while holding the<br /> driver_input_lock to prevent potential race conditions involving input<br /> reports.<br /> <br /> [1]<br /> BUG: KASAN: slab-use-after-free in rt_spin_lock+0x83/0x400 kernel/locking/spinlock_rt.c:56<br /> Call Trace:<br /> hidraw_report_event+0x5d/0x3a0 drivers/hid/hidraw.c:577<br /> hid_report_raw_event+0x311/0x1730 drivers/hid/hid-core.c:2076<br /> __hid_input_report drivers/hid/hid-core.c:2152 [inline]<br /> hid_input_report+0x44e/0x580 drivers/hid/hid-core.c:2174<br /> hid_irq_in+0x47e/0x6d0 drivers/hid/usbhid/hid-core.c:286<br /> __usb_hcd_giveback_urb+0x3b3/0x5e0 drivers/usb/core/hcd.c:1657<br /> dummy_timer+0x8a9/0x47d0 drivers/usb/gadget/udc/dummy_hcd.c:2005<br /> <br /> Allocated by task 10:<br /> hidraw_connect+0x57/0x430 drivers/hid/hidraw.c:606<br /> hid_connect+0x5bf/0x19d0 drivers/hid/hid-core.c:2277<br /> hid_hw_start+0xa8/0x120 drivers/hid/hid-core.c:2387<br /> corsairpsu_probe+0xd9/0x3c0 drivers/hwmon/corsair-psu.c:782<br /> <br /> Freed by task 10:<br /> hidraw_disconnect+0x4f/0x60 drivers/hid/hidraw.c:662<br /> hid_disconnect drivers/hid/hid-core.c:2362 [inline]<br /> hid_hw_stop+0x101/0x1e0 drivers/hid/hid-core.c:2407<br /> corsairpsu_probe+0x327/0x3c0 drivers/hwmon/corsair-psu.c:826<br /> <br /> Fix the problem by calling hid_device_io_stop() before calling<br /> hid_hw_stop().<br /> <br /> [groeck: Updated subject and description;<br /> call hid_device_io_stop() only if IO has been started]