CVE-2026-72432 (GCVE-0-2026-72432)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:56 – Updated: 2026-08-17 05:14
VLAI
Title
tpm_crb: Check ACPI_COMPANION() against NULL during probe
Summary
In the Linux kernel, the following vulnerability has been resolved: tpm_crb: Check ACPI_COMPANION() against NULL during probe 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(), so platform drivers that rely on the existence of a device's ACPI companion object need to verify its presence. Accordingly, add a requisite ACPI_COMPANION() check against NULL to the tpm_crb driver.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 48fe2cddc85c7849463bd01ae8b8c6b575ff508b , < c041d2be785feb9b5e36331921eadaefbe65349d (git)
Affected: 48fe2cddc85c7849463bd01ae8b8c6b575ff508b , < ddd33806b8911fa2ef849e8bbbab1e3fcb26adc0 (git)
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Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/char/tpm/tpm_crb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
              "version": "48fe2cddc85c7849463bd01ae8b8c6b575ff508b",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
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          "programFiles": [
            "drivers/char/tpm/tpm_crb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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            },
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              "versionType": "semver"
            },
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntpm_crb: Check ACPI_COMPANION() against NULL during probe\n\nEvery platform driver can be forced to match a device that doesn\u0027t match\nits list of device IDs because of device_match_driver_override(), so\nplatform drivers that rely on the existence of a device\u0027s ACPI companion\nobject need to verify its presence.\n\nAccordingly, add a requisite ACPI_COMPANION() check against NULL to the\ntpm_crb driver."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:14:32.158Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c041d2be785feb9b5e36331921eadaefbe65349d"
        },
        {
          "url": "https://git.kernel.org/stable/c/ddd33806b8911fa2ef849e8bbbab1e3fcb26adc0"
        }
      ],
      "title": "tpm_crb: Check ACPI_COMPANION() against NULL during probe",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72432",
    "datePublished": "2026-08-15T05:56:47.478Z",
    "dateReserved": "2026-08-09T03:40:39.929Z",
    "dateUpdated": "2026-08-17T05:14:32.158Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-72432",
      "date": "2026-09-21",
      "epss": "0.00198",
      "percentile": "0.09843"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/char/tpm/tpm_crb.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
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                    "versionType": "git"
                  },
                  {
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                    "status": "affected",
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                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/char/tpm/tpm_crb.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "7.1"
                  },
                  {
                    "lessThan": "7.1",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
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                    "version": "7.1.5",
                    "versionType": "semver"
                  },
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                    "status": "unaffected",
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                    "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\ntpm_crb: Check ACPI_COMPANION() against NULL during probe\n\nEvery platform driver can be forced to match a device that doesn\u0027t match\nits list of device IDs because of device_match_driver_override(), so\nplatform drivers that rely on the existence of a device\u0027s ACPI companion\nobject need to verify its presence.\n\nAccordingly, add a requisite ACPI_COMPANION() check against NULL to the\ntpm_crb driver."
          }
        ],
        "id": "CVE-2026-72432",
        "lastModified": "2026-08-17T06:19:10.530",
        "metrics": {},
        "published": "2026-08-15T06:22:17.057",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/c041d2be785feb9b5e36331921eadaefbe65349d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ddd33806b8911fa2ef849e8bbbab1e3fcb26adc0"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-19T07:27:41+00:00",
      "cve": "CVE-2026-72432",
      "id": "CVE-2026-72432",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "14",
      "product_status:known_not_affected": "260",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: tpm_crb: Check ACPI_COMPANION() against NULL during probe",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72432.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T11:45:33Z",
      "cve": "CVE-2026-72432",
      "id": "CVE-2026-72432",
      "initial_release_date": "2026-09-02T11:45:33Z",
      "product_status:known_not_affected": "362",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-72432",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-72432.json",
      "version": "2"
    }
  }
}



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