Vulnerability-Lookup

CVE-2026-93114 (GCVE-0-2026-93114)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:11 – Updated: 2026-09-17 16:11

Title

platform/surface: acpi-notify: Check ACPI companion before use

Summary

In the Linux kernel, the following vulnerability has been resolved: platform/surface: acpi-notify: Check ACPI companion before use Since every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), platform drivers that rely on the existence of a device's ACPI companion object should verify its presence. san_probe() dereferences the result of ACPI_COMPANION() when installing the GSBUS address space handler, so force-binding the driver to a device without an ACPI companion leads to a NULL pointer dereference. The dereference was introduced when the probe function was switched from ACPI_HANDLE() to ACPI_COMPANION(). Check the ACPI companion against NULL and return -ENODEV when it is missing, like commit e4865a56d013 ("ACPI: driver: Check ACPI_COMPANION() against NULL during probe") does for the core ACPI platform drivers.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/4faa43d4ef0b98beb…
https://git.kernel.org/stable/c/3855be0100efb98c2…
https://git.kernel.org/stable/c/f276b62f2ce1cbff7…
https://git.kernel.org/stable/c/9b6479da662c2ec4e…
https://git.kernel.org/stable/c/7fea5a310e3b2db24…
https://git.kernel.org/stable/c/428a82d987fcd8844…
https://git.kernel.org/stable/c/2b3a5dabe89e33041…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: a9e10e58730432e5de840eb3ddd55c75f29341b3 , < 4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13 (git) Affected: a9e10e58730432e5de840eb3ddd55c75f29341b3 , < 3855be0100efb98c26228c610db70a673611f3bd (git) Affected: a9e10e58730432e5de840eb3ddd55c75f29341b3 , < f276b62f2ce1cbff7fa50a8ee5afd8fef5a60897 (git) Affected: a9e10e58730432e5de840eb3ddd55c75f29341b3 , < 9b6479da662c2ec4e931ed9f7228df46aa8c3766 (git) Affected: a9e10e58730432e5de840eb3ddd55c75f29341b3 , < 7fea5a310e3b2db24f7aafe64897e4e659ffbb7d (git) Affected: a9e10e58730432e5de840eb3ddd55c75f29341b3 , < 428a82d987fcd8844e8868c85582eae75b4b5c51 (git) Affected: a9e10e58730432e5de840eb3ddd55c75f29341b3 , < 2b3a5dabe89e330413af403246b648c1890f368f (git)	guessed
Linux	Linux	Affected: 5.14 Unaffected: 0 , < 5.14 (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/surface/surface_acpi_notify.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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            {
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
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              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
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              "versionType": "semver"
            },
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              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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                },
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                  "versionStartIncluding": "5.14",
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                },
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/surface: acpi-notify: Check ACPI companion before use\n\nSince every platform driver can be forced to match a device that doesn\u0027t\nmatch its list of device IDs because of device_match_driver_override(),\nplatform drivers that rely on the existence of a device\u0027s ACPI companion\nobject should verify its presence.\n\nsan_probe() dereferences the result of ACPI_COMPANION() when installing\nthe GSBUS address space handler, so force-binding the driver to a device\nwithout an ACPI companion leads to a NULL pointer dereference.  The\ndereference was introduced when the probe function was switched from\nACPI_HANDLE() to ACPI_COMPANION().\n\nCheck the ACPI companion against NULL and return -ENODEV when it is\nmissing, like commit e4865a56d013 (\"ACPI: driver: Check ACPI_COMPANION()\nagainst NULL during probe\") does for the core ACPI platform drivers."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:11:22.463Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13"
        },
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          "url": "https://git.kernel.org/stable/c/3855be0100efb98c26228c610db70a673611f3bd"
        },
        {
          "url": "https://git.kernel.org/stable/c/f276b62f2ce1cbff7fa50a8ee5afd8fef5a60897"
        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/7fea5a310e3b2db24f7aafe64897e4e659ffbb7d"
        },
        {
          "url": "https://git.kernel.org/stable/c/428a82d987fcd8844e8868c85582eae75b4b5c51"
        },
        {
          "url": "https://git.kernel.org/stable/c/2b3a5dabe89e330413af403246b648c1890f368f"
        }
      ],
      "title": "platform/surface: acpi-notify: Check ACPI companion before use",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93114",
    "datePublished": "2026-09-17T16:11:22.463Z",
    "dateReserved": "2026-09-17T16:02:15.086Z",
    "dateUpdated": "2026-09-17T16:11:22.463Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
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                "product": "Linux",
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                  "drivers/platform/surface/surface_acpi_notify.c"
                ],
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                    "versionType": "git"
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                "vendor": "Linux",
                "versions": [
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            ],
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          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/surface: acpi-notify: Check ACPI companion before use\n\nSince every platform driver can be forced to match a device that doesn\u0027t\nmatch its list of device IDs because of device_match_driver_override(),\nplatform drivers that rely on the existence of a device\u0027s ACPI companion\nobject should verify its presence.\n\nsan_probe() dereferences the result of ACPI_COMPANION() when installing\nthe GSBUS address space handler, so force-binding the driver to a device\nwithout an ACPI companion leads to a NULL pointer dereference.  The\ndereference was introduced when the probe function was switched from\nACPI_HANDLE() to ACPI_COMPANION().\n\nCheck the ACPI companion against NULL and return -ENODEV when it is\nmissing, like commit e4865a56d013 (\"ACPI: driver: Check ACPI_COMPANION()\nagainst NULL during probe\") does for the core ACPI platform drivers."
          }
        ],
        "id": "CVE-2026-93114",
        "lastModified": "2026-09-17T17:18:05.943",
        "metrics": {},
        "published": "2026-09-17T17:18:05.943",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          }
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}

FKIE_CVE-2026-93114

Vulnerability from fkie_nvd - Published: 2026-09-17 17:18 - Updated: 2026-09-17 17:18

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2b3a5dabe89e330413af403246b648c1890f368f
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3855be0100efb98c26228c610db70a673611f3bd
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/428a82d987fcd8844e8868c85582eae75b4b5c51
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7fea5a310e3b2db24f7aafe64897e4e659ffbb7d
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9b6479da662c2ec4e931ed9f7228df46aa8c3766
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f276b62f2ce1cbff7fa50a8ee5afd8fef5a60897

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/surface/surface_acpi_notify.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13",
              "status": "affected",
              "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
              "versionType": "git"
            },
            {
              "lessThan": "3855be0100efb98c26228c610db70a673611f3bd",
              "status": "affected",
              "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
              "versionType": "git"
            },
            {
              "lessThan": "f276b62f2ce1cbff7fa50a8ee5afd8fef5a60897",
              "status": "affected",
              "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
              "versionType": "git"
            },
            {
              "lessThan": "9b6479da662c2ec4e931ed9f7228df46aa8c3766",
              "status": "affected",
              "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
              "versionType": "git"
            },
            {
              "lessThan": "7fea5a310e3b2db24f7aafe64897e4e659ffbb7d",
              "status": "affected",
              "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
              "versionType": "git"
            },
            {
              "lessThan": "428a82d987fcd8844e8868c85582eae75b4b5c51",
              "status": "affected",
              "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
              "versionType": "git"
            },
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              "status": "affected",
              "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/surface/surface_acpi_notify.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "lessThan": "5.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "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\nplatform/surface: acpi-notify: Check ACPI companion before use\n\nSince every platform driver can be forced to match a device that doesn\u0027t\nmatch its list of device IDs because of device_match_driver_override(),\nplatform drivers that rely on the existence of a device\u0027s ACPI companion\nobject should verify its presence.\n\nsan_probe() dereferences the result of ACPI_COMPANION() when installing\nthe GSBUS address space handler, so force-binding the driver to a device\nwithout an ACPI companion leads to a NULL pointer dereference.  The\ndereference was introduced when the probe function was switched from\nACPI_HANDLE() to ACPI_COMPANION().\n\nCheck the ACPI companion against NULL and return -ENODEV when it is\nmissing, like commit e4865a56d013 (\"ACPI: driver: Check ACPI_COMPANION()\nagainst NULL during probe\") does for the core ACPI platform drivers."
    }
  ],
  "id": "CVE-2026-93114",
  "lastModified": "2026-09-17T17:18:05.943",
  "metrics": {},
  "published": "2026-09-17T17:18:05.943",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2b3a5dabe89e330413af403246b648c1890f368f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3855be0100efb98c26228c610db70a673611f3bd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/428a82d987fcd8844e8868c85582eae75b4b5c51"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7fea5a310e3b2db24f7aafe64897e4e659ffbb7d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9b6479da662c2ec4e931ed9f7228df46aa8c3766"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f276b62f2ce1cbff7fa50a8ee5afd8fef5a60897"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-FMFR-WC4P-75CJ

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

In the Linux kernel, the following vulnerability has been resolved:

platform/surface: acpi-notify: Check ACPI companion before use

Since every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), platform drivers that rely on the existence of a device's ACPI companion object should verify its presence.

san_probe() dereferences the result of ACPI_COMPANION() when installing the GSBUS address space handler, so force-binding the driver to a device without an ACPI companion leads to a NULL pointer dereference. The dereference was introduced when the probe function was switched from ACPI_HANDLE() to ACPI_COMPANION().

Check the ACPI companion against NULL and return -ENODEV when it is missing, like commit e4865a56d013 ("ACPI: driver: Check ACPI_COMPANION() against NULL during probe") does for the core ACPI platform drivers.

Show details on source website

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To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-93114"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:18:05Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/surface: acpi-notify: Check ACPI companion before use\n\nSince every platform driver can be forced to match a device that doesn\u0027t\nmatch its list of device IDs because of device_match_driver_override(),\nplatform drivers that rely on the existence of a device\u0027s ACPI companion\nobject should verify its presence.\n\nsan_probe() dereferences the result of ACPI_COMPANION() when installing\nthe GSBUS address space handler, so force-binding the driver to a device\nwithout an ACPI companion leads to a NULL pointer dereference.  The\ndereference was introduced when the probe function was switched from\nACPI_HANDLE() to ACPI_COMPANION().\n\nCheck the ACPI companion against NULL and return -ENODEV when it is\nmissing, like commit e4865a56d013 (\"ACPI: driver: Check ACPI_COMPANION()\nagainst NULL during probe\") does for the core ACPI platform drivers.",
  "id": "GHSA-fmfr-wc4p-75cj",
  "modified": "2026-09-17T18:32:11Z",
  "published": "2026-09-17T18:32:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93114"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2b3a5dabe89e330413af403246b648c1890f368f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3855be0100efb98c26228c610db70a673611f3bd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/428a82d987fcd8844e8868c85582eae75b4b5c51"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7fea5a310e3b2db24f7aafe64897e4e659ffbb7d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b6479da662c2ec4e931ed9f7228df46aa8c3766"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f276b62f2ce1cbff7fa50a8ee5afd8fef5a60897"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

Sightings

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Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Action not permitted

CVE-2026-93114 (GCVE-0-2026-93114)

FKIE_CVE-2026-93114

GHSA-FMFR-WC4P-75CJ

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