CVE-2026-68361 (GCVE-0-2026-68361)
Vulnerability from cvelistv5
Published
2026-08-10 12:03
Modified
2026-08-19 16:34
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: hwmon: (corsair-psu) Stop device IO before calling hid_hw_stop hid_hw_stop() does not stop the device IO. This results in a race condition between hid_input_report() and the point immediately following the execution of hid_device_io_start() within corsairpsu_probe(). If the probe operation fails after "io start" has been initiated, this race condition will result in a uaf vulnerability [1]. CPU0 CPU1 ==== ==== corsairpsu_probe() hid_device_io_start() ... unlock driver_input_lock hid_hw_stop() kfree(hidraw) __hid_input_report() ... acquire driver_input_lock hid_report_raw_event() hidraw_report_event() ... access hidraw's list_lock // trigger uaf Consequently, when corsairpsu_probe() fails and hid_hw_stop() needs to be executed, the io_started flag is first cleared while holding the driver_input_lock to prevent potential race conditions involving input reports. [1] BUG: KASAN: slab-use-after-free in rt_spin_lock+0x83/0x400 kernel/locking/spinlock_rt.c:56 Call Trace: hidraw_report_event+0x5d/0x3a0 drivers/hid/hidraw.c:577 hid_report_raw_event+0x311/0x1730 drivers/hid/hid-core.c:2076 __hid_input_report drivers/hid/hid-core.c:2152 [inline] hid_input_report+0x44e/0x580 drivers/hid/hid-core.c:2174 hid_irq_in+0x47e/0x6d0 drivers/hid/usbhid/hid-core.c:286 __usb_hcd_giveback_urb+0x3b3/0x5e0 drivers/usb/core/hcd.c:1657 dummy_timer+0x8a9/0x47d0 drivers/usb/gadget/udc/dummy_hcd.c:2005 Allocated by task 10: hidraw_connect+0x57/0x430 drivers/hid/hidraw.c:606 hid_connect+0x5bf/0x19d0 drivers/hid/hid-core.c:2277 hid_hw_start+0xa8/0x120 drivers/hid/hid-core.c:2387 corsairpsu_probe+0xd9/0x3c0 drivers/hwmon/corsair-psu.c:782 Freed by task 10: hidraw_disconnect+0x4f/0x60 drivers/hid/hidraw.c:662 hid_disconnect drivers/hid/hid-core.c:2362 [inline] hid_hw_stop+0x101/0x1e0 drivers/hid/hid-core.c:2407 corsairpsu_probe+0x327/0x3c0 drivers/hwmon/corsair-psu.c:826 Fix the problem by calling hid_device_io_stop() before calling hid_hw_stop(). [groeck: Updated subject and description; call hid_device_io_stop() only if IO has been started]
References
Impacted products
Vendor Product Version
Linux Linux Version: d115b51e0e567199c821fc39e13b6af7e78f247d
Version: d115b51e0e567199c821fc39e13b6af7e78f247d
Version: d115b51e0e567199c821fc39e13b6af7e78f247d
Version: d115b51e0e567199c821fc39e13b6af7e78f247d
Version: d115b51e0e567199c821fc39e13b6af7e78f247d
Version: d115b51e0e567199c821fc39e13b6af7e78f247d
Version: d115b51e0e567199c821fc39e13b6af7e78f247d
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{
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          "programFiles": [
            "drivers/hwmon/corsair-psu.c"
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      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "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\u0027s 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]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:34:13.231Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/45dcd8a63069197f64dbda30509b9e224b74c0d8"
        },
        {
          "url": "https://git.kernel.org/stable/c/c80ed058f31bb0251a748034d69feb376741dcb2"
        },
        {
          "url": "https://git.kernel.org/stable/c/e6e1e0f3050d1a1a3ea1c9d6253363e87fdad67a"
        },
        {
          "url": "https://git.kernel.org/stable/c/c0aae8d24f5e52d6910f97d59bc624e131f3ae1a"
        },
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          "url": "https://git.kernel.org/stable/c/ec477af3a7e8d3964e62fd24ef01cdebb96b8e4e"
        },
        {
          "url": "https://git.kernel.org/stable/c/bb25bd980f2d9bd34558e1b1d16636e4945baf14"
        },
        {
          "url": "https://git.kernel.org/stable/c/9ab8656548cd737b98d0b19c4253aff8d68e97f4"
        }
      ],
      "title": "hwmon: (corsair-psu) Stop device IO before calling hid_hw_stop",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68361",
    "datePublished": "2026-08-10T12:03:38.332Z",
    "dateReserved": "2026-07-30T09:28:09.385Z",
    "dateUpdated": "2026-08-19T16:34:13.231Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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