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CVE-2026-68361

Estado: RecibidaSin puntuar—

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

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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.

Fix the problem by calling hid_device_io_stop() before calling hid_hw_stop().

Detalles técnicos trazas, registros y código del informe original
[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

[groeck: Updated subject and description;
 call hid_device_io_stop() only if IO has been started]

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-68361",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "d115b51e0e567199c821fc39e13b6af7e78f247d",
              "lessThan": "45dcd8a63069197f64dbda30509b9e224b74c0d8",
              "versionType": "git"
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            {
              "status": "affected",
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            {
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              "lessThan": "e6e1e0f3050d1a1a3ea1c9d6253363e87fdad67a",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "c0aae8d24f5e52d6910f97d59bc624e131f3ae1a",
              "versionType": "git"
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            {
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              "lessThan": "ec477af3a7e8d3964e62fd24ef01cdebb96b8e4e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d115b51e0e567199c821fc39e13b6af7e78f247d",
              "lessThan": "bb25bd980f2d9bd34558e1b1d16636e4945baf14",
              "versionType": "git"
            },
            {
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            }
          ],
          "programFiles": [
            "drivers/hwmon/corsair-psu.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.11"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.11",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/hwmon/corsair-psu.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-10T13:20:28.620",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/45dcd8a63069197f64dbda30509b9e224b74c0d8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9ab8656548cd737b98d0b19c4253aff8d68e97f4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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    {
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c0aae8d24f5e52d6910f97d59bc624e131f3ae1a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c80ed058f31bb0251a748034d69feb376741dcb2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e6e1e0f3050d1a1a3ea1c9d6253363e87fdad67a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ec477af3a7e8d3964e62fd24ef01cdebb96b8e4e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "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'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]"
    }
  ],
  "lastModified": "2026-08-19T17:20:45.700",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}