{"id":"CVE-2026-68361","summary":"hwmon: (corsair-psu) Stop device IO before calling hid_hw_stop","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (corsair-psu) Stop device IO before calling hid_hw_stop\n\nhid_hw_stop() does not stop the device IO.\n\nThis results in a race condition between hid_input_report() and the point\nimmediately following the execution of hid_device_io_start() within\ncorsairpsu_probe(). If the probe operation fails after \"io start\" has\nbeen initiated, this race condition will result in a uaf vulnerability\n[1].\n\nCPU0\t\t\t\tCPU1\n====\t\t\t\t====\ncorsairpsu_probe()\n hid_device_io_start()\n  ... unlock driver_input_lock\n hid_hw_stop()\n  kfree(hidraw)\t\t\t__hid_input_report()\n\t\t\t\t ... acquire driver_input_lock\n\t\t\t\t hid_report_raw_event()\n\t\t\t\t  hidraw_report_event()\n\t\t\t\t   ... access hidraw's list_lock // trigger uaf\n\nConsequently, when corsairpsu_probe() fails and hid_hw_stop() needs to\nbe executed, the io_started flag is first cleared while holding the\ndriver_input_lock to prevent potential race conditions involving input\nreports.\n\n[1]\nBUG: KASAN: slab-use-after-free in rt_spin_lock+0x83/0x400 kernel/locking/spinlock_rt.c:56\nCall Trace:\n hidraw_report_event+0x5d/0x3a0 drivers/hid/hidraw.c:577\n hid_report_raw_event+0x311/0x1730 drivers/hid/hid-core.c:2076\n __hid_input_report drivers/hid/hid-core.c:2152 [inline]\n hid_input_report+0x44e/0x580 drivers/hid/hid-core.c:2174\n hid_irq_in+0x47e/0x6d0 drivers/hid/usbhid/hid-core.c:286\n __usb_hcd_giveback_urb+0x3b3/0x5e0 drivers/usb/core/hcd.c:1657\n dummy_timer+0x8a9/0x47d0 drivers/usb/gadget/udc/dummy_hcd.c:2005\n\nAllocated by task 10:\n hidraw_connect+0x57/0x430 drivers/hid/hidraw.c:606\n hid_connect+0x5bf/0x19d0 drivers/hid/hid-core.c:2277\n hid_hw_start+0xa8/0x120 drivers/hid/hid-core.c:2387\n corsairpsu_probe+0xd9/0x3c0 drivers/hwmon/corsair-psu.c:782\n\nFreed by task 10:\n hidraw_disconnect+0x4f/0x60 drivers/hid/hidraw.c:662\n hid_disconnect drivers/hid/hid-core.c:2362 [inline]\n hid_hw_stop+0x101/0x1e0 drivers/hid/hid-core.c:2407\n corsairpsu_probe+0x327/0x3c0 drivers/hwmon/corsair-psu.c:826\n\nFix the problem by calling hid_device_io_stop() before calling\nhid_hw_stop().\n\n[groeck: Updated subject and description;\n call hid_device_io_stop() only if IO has been started]","modified":"2026-08-21T03:30:10.055760656Z","published":"2026-08-10T12:03:38.332Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68361.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/45dcd8a63069197f64dbda30509b9e224b74c0d8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9ab8656548cd737b98d0b19c4253aff8d68e97f4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bb25bd980f2d9bd34558e1b1d16636e4945baf14"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c0aae8d24f5e52d6910f97d59bc624e131f3ae1a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c80ed058f31bb0251a748034d69feb376741dcb2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e6e1e0f3050d1a1a3ea1c9d6253363e87fdad67a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ec477af3a7e8d3964e62fd24ef01cdebb96b8e4e"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68361.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68361"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d115b51e0e567199c821fc39e13b6af7e78f247d"},{"fixed":"45dcd8a63069197f64dbda30509b9e224b74c0d8"},{"fixed":"c80ed058f31bb0251a748034d69feb376741dcb2"},{"fixed":"e6e1e0f3050d1a1a3ea1c9d6253363e87fdad67a"},{"fixed":"c0aae8d24f5e52d6910f97d59bc624e131f3ae1a"},{"fixed":"ec477af3a7e8d3964e62fd24ef01cdebb96b8e4e"},{"fixed":"bb25bd980f2d9bd34558e1b1d16636e4945baf14"},{"fixed":"9ab8656548cd737b98d0b19c4253aff8d68e97f4"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68361.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.216"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.183"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.148"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.101"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.42"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68361.json"}}],"schema_version":"1.9.0"}