CVE-2026-98000 (GCVE-0-2026-98000)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:23 – Updated: 2026-10-19 09:12
VLAI
Title
hwmon: Fix potential UAF in pec_store
Summary
In the Linux kernel, the following vulnerability has been resolved: hwmon: Fix potential UAF in pec_store Sashiko reports: In pec_store(), a guard(mutex)(&hwdev->lock) is taken. If the chip write operation returns an error other than -EOPNOTSUPP, the code jumps to the put label, which calls put_device(hdev). If this drops the final reference, the device is freed. When the function then returns, the guard cleanup function runs and attempts to unlock the freed mutex. Use scoped_guard() instead of guard() to avoid the problem.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7097 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3ad2a7b9b15d5072139a20be84adb36776eb6c9b , < 8afab57bcdbc2186f325972e777880ac5a220f4f (git)
Affected: 3ad2a7b9b15d5072139a20be84adb36776eb6c9b , < 01dd8b4fc2cf83c66565c0f382fb1841e9000a89 (git)
Affected: 3ad2a7b9b15d5072139a20be84adb36776eb6c9b , < 354ccc99b2dc8ba0cf6d4de34e520bcf6ecca5c2 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2.7 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwmon/hwmon.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8afab57bcdbc2186f325972e777880ac5a220f4f",
              "status": "affected",
              "version": "3ad2a7b9b15d5072139a20be84adb36776eb6c9b",
              "versionType": "git"
            },
            {
              "lessThan": "01dd8b4fc2cf83c66565c0f382fb1841e9000a89",
              "status": "affected",
              "version": "3ad2a7b9b15d5072139a20be84adb36776eb6c9b",
              "versionType": "git"
            },
            {
              "lessThan": "354ccc99b2dc8ba0cf6d4de34e520bcf6ecca5c2",
              "status": "affected",
              "version": "3ad2a7b9b15d5072139a20be84adb36776eb6c9b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwmon/hwmon.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "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",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.7",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: Fix potential UAF in pec_store\n\nSashiko reports:\n\nIn pec_store(), a guard(mutex)(\u0026hwdev-\u003elock) is taken. If the chip write\noperation returns an error other than -EOPNOTSUPP, the code jumps to the\nput label, which calls put_device(hdev). If this drops the final reference,\nthe device is freed. When the function then returns, the guard cleanup\nfunction runs and attempts to unlock the freed mutex.\n\nUse scoped_guard() instead of guard() to avoid the problem."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:12:06.063Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8afab57bcdbc2186f325972e777880ac5a220f4f"
        },
        {
          "url": "https://git.kernel.org/stable/c/01dd8b4fc2cf83c66565c0f382fb1841e9000a89"
        },
        {
          "url": "https://git.kernel.org/stable/c/354ccc99b2dc8ba0cf6d4de34e520bcf6ecca5c2"
        }
      ],
      "title": "hwmon: Fix potential UAF in pec_store",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98000",
    "datePublished": "2026-09-25T10:23:28.703Z",
    "dateReserved": "2026-09-25T10:19:56.068Z",
    "dateUpdated": "2026-10-19T09:12:06.063Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-98000",
      "date": "2026-10-18",
      "epss": "0.00166",
      "percentile": "0.05455"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/hwmon/hwmon.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "8afab57bcdbc2186f325972e777880ac5a220f4f",
                    "status": "affected",
                    "version": "3ad2a7b9b15d5072139a20be84adb36776eb6c9b",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "01dd8b4fc2cf83c66565c0f382fb1841e9000a89",
                    "status": "affected",
                    "version": "3ad2a7b9b15d5072139a20be84adb36776eb6c9b",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "354ccc99b2dc8ba0cf6d4de34e520bcf6ecca5c2",
                    "status": "affected",
                    "version": "3ad2a7b9b15d5072139a20be84adb36776eb6c9b",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/hwmon/hwmon.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.18"
                  },
                  {
                    "lessThan": "6.18",
                    "status": "unaffected",
                    "version": "0",
                    "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",
                    "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: Fix potential UAF in pec_store\n\nSashiko reports:\n\nIn pec_store(), a guard(mutex)(\u0026hwdev-\u003elock) is taken. If the chip write\noperation returns an error other than -EOPNOTSUPP, the code jumps to the\nput label, which calls put_device(hdev). If this drops the final reference,\nthe device is freed. When the function then returns, the guard cleanup\nfunction runs and attempts to unlock the freed mutex.\n\nUse scoped_guard() instead of guard() to avoid the problem."
          }
        ],
        "id": "CVE-2026-98000",
        "lastModified": "2026-10-19T10:17:51.393",
        "metrics": {},
        "published": "2026-09-25T11:17:28.213",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/01dd8b4fc2cf83c66565c0f382fb1841e9000a89"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/354ccc99b2dc8ba0cf6d4de34e520bcf6ecca5c2"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/8afab57bcdbc2186f325972e777880ac5a220f4f"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-17T21:49:34+00:00",
      "cve": "CVE-2026-98000",
      "id": "CVE-2026-98000",
      "initial_release_date": "2026-09-25T00:00:00+00:00",
      "product_status:known_affected": "91",
      "product_status:known_not_affected": "186",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: hwmon: Fix potential UAF in pec_store",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98000.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-01T00:37:25Z",
      "cve": "CVE-2026-98000",
      "id": "CVE-2026-98000",
      "initial_release_date": "2026-09-30T15:00:00Z",
      "product_status:known_not_affected": "347",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98000",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-98000.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.