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

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-93114

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-93114

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
        "lessThan": "4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
        "lessThan": "3855be0100efb98c26228c610db70a673611f3bd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
        "lessThan": "f276b62f2ce1cbff7fa50a8ee5afd8fef5a60897",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
        "lessThan": "9b6479da662c2ec4e931ed9f7228df46aa8c3766",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
        "lessThan": "7fea5a310e3b2db24f7aafe64897e4e659ffbb7d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
        "lessThan": "428a82d987fcd8844e8868c85582eae75b4b5c51",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a9e10e58730432e5de840eb3ddd55c75f29341b3",
        "lessThan": "2b3a5dabe89e330413af403246b648c1890f368f",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/platform/surface/surface_acpi_notify.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.14"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.14",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.52",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/platform/surface/surface_acpi_notify.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-93114

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#37840 · Revision 1
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Publisher date
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