FKIE_CVE-2026-97968

Vulnerability from fkie_nvd - Published: 2026-09-25 11:17 - Updated: 2026-09-25 11:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: hwmon: (corsair-cpro) Create debugfs entries after hwmon registration ccp_debugfs_init() registers debugfs files whose private data is the devm allocated ccp. It runs before hwmon_device_register_with_info(), so when that registration fails, ccp_probe() returns with the files still in place. The HID core then frees ccp, and ccp_remove() is not called for a failed probe, so nothing removes them later either. Reading one of the files dereferences the freed pointer. Create the debugfs entries only after the hwmon device has been registered, so no failing path can leave them behind. The two version queries stay where they are. They send USB commands without holding ccp->mutex, which is only safe as long as nothing else can call send_usb_cmd(); once the hwmon device is registered its callbacks can do so concurrently. Only the debugfs creation moves, and it is told which queries succeeded.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/508baf1713f32f287bfb4f85d759403ec8ba35a3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6c5d333216a937044acd3336e9ec7e30ff2eaee4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a58a966a440071bb877ef62535d1016952f83101
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fdfe17cb865715aad30328678344eb79889207ab
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwmon/corsair-cpro.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6c5d333216a937044acd3336e9ec7e30ff2eaee4",
              "status": "affected",
              "version": "5997eb60f896830126bc1783465b678b110e2fdd",
              "versionType": "git"
            },
            {
              "lessThan": "a58a966a440071bb877ef62535d1016952f83101",
              "status": "affected",
              "version": "5997eb60f896830126bc1783465b678b110e2fdd",
              "versionType": "git"
            },
            {
              "lessThan": "fdfe17cb865715aad30328678344eb79889207ab",
              "status": "affected",
              "version": "5997eb60f896830126bc1783465b678b110e2fdd",
              "versionType": "git"
            },
            {
              "lessThan": "508baf1713f32f287bfb4f85d759403ec8ba35a3",
              "status": "affected",
              "version": "5997eb60f896830126bc1783465b678b110e2fdd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwmon/corsair-cpro.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (corsair-cpro) Create debugfs entries after hwmon registration\n\nccp_debugfs_init() registers debugfs files whose private data is the devm\nallocated ccp.  It runs before hwmon_device_register_with_info(), so when\nthat registration fails, ccp_probe() returns with the files still in\nplace.  The HID core then frees ccp, and ccp_remove() is not called for a\nfailed probe, so nothing removes them later either.  Reading one of the\nfiles dereferences the freed pointer.\n\nCreate the debugfs entries only after the hwmon device has been\nregistered, so no failing path can leave them behind.\n\nThe two version queries stay where they are.  They send USB commands\nwithout holding ccp-\u003emutex, which is only safe as long as nothing else\ncan call send_usb_cmd(); once the hwmon device is registered its\ncallbacks can do so concurrently.  Only the debugfs creation moves, and\nit is told which queries succeeded."
    }
  ],
  "id": "CVE-2026-97968",
  "lastModified": "2026-09-25T11:17:24.633",
  "metrics": {},
  "published": "2026-09-25T11:17:24.633",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/508baf1713f32f287bfb4f85d759403ec8ba35a3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6c5d333216a937044acd3336e9ec7e30ff2eaee4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a58a966a440071bb877ef62535d1016952f83101"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fdfe17cb865715aad30328678344eb79889207ab"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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