FKIE_CVE-2026-68180

Vulnerability from fkie_nvd - Published: 2026-08-10 13:20 - Updated: 2026-08-19 17:20
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: intel_th: fix MSC output device reference leak intel_th_output_open() looks up the output device with bus_find_device_by_devt(), which returns the device with a reference that must be dropped after use. commit 95fc36a234da ("intel_th: fix device leak on output open()") attempted to drop the reference from intel_th_output_release(). However, a successful open replaces file->f_op with the output driver file operations before returning, so close runs the output driver release callback instead. For MSC outputs, close runs intel_th_msc_release(), which only removes the per-file iterator and does not drop the device reference taken by intel_th_output_open(). Consequently, every successful MSC output open leaks one device reference. Drop the device reference from intel_th_msc_release(), which is the release path actually used for MSC output files. Remove the now-unused intel_th_output_release() callback from intel_th_output_fops.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/12ad4fad748e6e563ff4480f03b89134a41b5c37
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/141641a70ed337e54487f766ede745fc2ce44c42
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/26e27b8dcef1e4df6f30d8f25b3304a506d482b3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/761b785a0cfbce43761227bc42a7f984f31f8921
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c3a28f9cb82425fe0835048ed3677f321e780691
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/caba30eb8bd321c465ecfc7d850ee85f5b353496
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ddcf2064d7ec5a8c9afa7cb74442320e443502bc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/df55842fddbcdb80e6dd16680439c0f780ed592e
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwtracing/intel_th/core.c",
            "drivers/hwtracing/intel_th/msu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "12ad4fad748e6e563ff4480f03b89134a41b5c37",
              "status": "affected",
              "version": "af4b9467296b9a16ebc008147238070236982b6d",
              "versionType": "git"
            },
            {
              "lessThan": "df55842fddbcdb80e6dd16680439c0f780ed592e",
              "status": "affected",
              "version": "64015cbf06e8bb75b81ae95b997e847b55280f7f",
              "versionType": "git"
            },
            {
              "lessThan": "141641a70ed337e54487f766ede745fc2ce44c42",
              "status": "affected",
              "version": "b71e64ef7ff9443835d1333e3e80ab1e49e5209f",
              "versionType": "git"
            },
            {
              "lessThan": "ddcf2064d7ec5a8c9afa7cb74442320e443502bc",
              "status": "affected",
              "version": "bf7785434b5d05d940d936b78925080950bd54dd",
              "versionType": "git"
            },
            {
              "lessThan": "26e27b8dcef1e4df6f30d8f25b3304a506d482b3",
              "status": "affected",
              "version": "0fca16c5591534cc1fec8b6181277ee3a3d0f26c",
              "versionType": "git"
            },
            {
              "lessThan": "caba30eb8bd321c465ecfc7d850ee85f5b353496",
              "status": "affected",
              "version": "f9b059bda4276f2bb72cb98ec7875a747f042ea2",
              "versionType": "git"
            },
            {
              "lessThan": "c3a28f9cb82425fe0835048ed3677f321e780691",
              "status": "affected",
              "version": "95fc36a234da24bbc5f476f8104a5a15f99ed3e3",
              "versionType": "git"
            },
            {
              "lessThan": "761b785a0cfbce43761227bc42a7f984f31f8921",
              "status": "affected",
              "version": "95fc36a234da24bbc5f476f8104a5a15f99ed3e3",
              "versionType": "git"
            },
            {
              "lessThan": "5.10.265",
              "status": "affected",
              "version": "5.10.249",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.216",
              "status": "affected",
              "version": "5.15.199",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.183",
              "status": "affected",
              "version": "6.1.162",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.148",
              "status": "affected",
              "version": "6.6.122",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.101",
              "status": "affected",
              "version": "6.12.68",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.42",
              "status": "affected",
              "version": "6.18.8",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwtracing/intel_th/core.c",
            "drivers/hwtracing/intel_th/msu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "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\nintel_th: fix MSC output device reference leak\n\nintel_th_output_open() looks up the output device with\nbus_find_device_by_devt(), which returns the device with a reference that\nmust be dropped after use.\n\ncommit 95fc36a234da (\"intel_th: fix device leak on output open()\")\nattempted to drop the reference from intel_th_output_release(). However,\na successful open replaces file-\u003ef_op with the output driver file\noperations before returning, so close runs the output driver release\ncallback instead.\n\nFor MSC outputs, close runs intel_th_msc_release(), which only removes\nthe per-file iterator and does not drop the device reference taken by\nintel_th_output_open(). Consequently, every successful MSC output open\nleaks one device reference.\n\nDrop the device reference from intel_th_msc_release(), which is the\nrelease path actually used for MSC output files. Remove the now-unused\nintel_th_output_release() callback from intel_th_output_fops."
    }
  ],
  "id": "CVE-2026-68180",
  "lastModified": "2026-08-19T17:20:34.203",
  "metrics": {},
  "published": "2026-08-10T13:20:04.967",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/12ad4fad748e6e563ff4480f03b89134a41b5c37"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/141641a70ed337e54487f766ede745fc2ce44c42"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/26e27b8dcef1e4df6f30d8f25b3304a506d482b3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/761b785a0cfbce43761227bc42a7f984f31f8921"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c3a28f9cb82425fe0835048ed3677f321e780691"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/caba30eb8bd321c465ecfc7d850ee85f5b353496"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ddcf2064d7ec5a8c9afa7cb74442320e443502bc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/df55842fddbcdb80e6dd16680439c0f780ed592e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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