FKIE_CVE-2026-98669

Vulnerability from fkie_nvd - Published: 2026-10-18 16:17 - Updated: 2026-10-30 13:21
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: iio: buffer: serialize buffer teardown with mode claims Buffer-mode claims hold mlock to guarantee that the device remains in buffer mode until the claim is released. Normal buffer updates take info_exist_lock followed by mlock in iio_update_buffers(). However, iio_device_unregister() disables and deactivates all buffers without taking mlock. This can invalidate buffer state, including active_scan_mask, while a buffer-mode claim is held. Take mlock in iio_disable_all_buffers() so that unregister honors the mode-claim lifetime guarantee. The info_exist_lock -> mlock ordering matches iio_update_buffers().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/261f54966ebf45ced5fe5e1fe5119c6c44e140ab
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6a728408ff522b749c2a3c7e68f44e861fa0dbfb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/84bb0fc46ccf6a545b8fdf57cda83770186ed8dd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/89f3852a28fcf7bab599280cb082baa0675536db
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b466db9e68b4741af85f6c017e2bb0a2f025053f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cebbecb26d22368440c4779f8275d790cf347177
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e63188d77e10c0951bf67da6c295f768fd1abf4b
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iio/industrialio-buffer.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "261f54966ebf45ced5fe5e1fe5119c6c44e140ab",
              "status": "affected",
              "version": "a9c471892d75847671a246619c2148578f22bbc6",
              "versionType": "git"
            },
            {
              "lessThan": "cebbecb26d22368440c4779f8275d790cf347177",
              "status": "affected",
              "version": "7bca0af538a49dacb1470f233be0676bdc09605b",
              "versionType": "git"
            },
            {
              "lessThan": "6a728408ff522b749c2a3c7e68f44e861fa0dbfb",
              "status": "affected",
              "version": "0a8565425afd8ba0e1a0ea73e21da119ee6dacea",
              "versionType": "git"
            },
            {
              "lessThan": "89f3852a28fcf7bab599280cb082baa0675536db",
              "status": "affected",
              "version": "0a8565425afd8ba0e1a0ea73e21da119ee6dacea",
              "versionType": "git"
            },
            {
              "lessThan": "b466db9e68b4741af85f6c017e2bb0a2f025053f",
              "status": "affected",
              "version": "0a8565425afd8ba0e1a0ea73e21da119ee6dacea",
              "versionType": "git"
            },
            {
              "lessThan": "e63188d77e10c0951bf67da6c295f768fd1abf4b",
              "status": "affected",
              "version": "0a8565425afd8ba0e1a0ea73e21da119ee6dacea",
              "versionType": "git"
            },
            {
              "lessThan": "84bb0fc46ccf6a545b8fdf57cda83770186ed8dd",
              "status": "affected",
              "version": "0a8565425afd8ba0e1a0ea73e21da119ee6dacea",
              "versionType": "git"
            },
            {
              "lessThan": "5.15.224",
              "status": "affected",
              "version": "5.15.137",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.191",
              "status": "affected",
              "version": "6.1.60",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iio/industrialio-buffer.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "lessThan": "6.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.224",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "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\niio: buffer: serialize buffer teardown with mode claims\n\nBuffer-mode claims hold mlock to guarantee that the device remains in\nbuffer mode until the claim is released. Normal buffer updates take\ninfo_exist_lock followed by mlock in iio_update_buffers().\n\nHowever, iio_device_unregister() disables and deactivates all buffers\nwithout taking mlock. This can invalidate buffer state, including\nactive_scan_mask, while a buffer-mode claim is held.\n\nTake mlock in iio_disable_all_buffers() so that unregister honors the\nmode-claim lifetime guarantee. The info_exist_lock -\u003e mlock ordering\nmatches iio_update_buffers()."
    }
  ],
  "id": "CVE-2026-98669",
  "lastModified": "2026-10-30T13:21:17.290",
  "metrics": {},
  "published": "2026-10-18T16:17:20.190",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/261f54966ebf45ced5fe5e1fe5119c6c44e140ab"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6a728408ff522b749c2a3c7e68f44e861fa0dbfb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/84bb0fc46ccf6a545b8fdf57cda83770186ed8dd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/89f3852a28fcf7bab599280cb082baa0675536db"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b466db9e68b4741af85f6c017e2bb0a2f025053f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cebbecb26d22368440c4779f8275d790cf347177"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e63188d77e10c0951bf67da6c295f768fd1abf4b"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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