Vulnerability-Lookup

GHSA-CX57-3HC8-Q627

Vulnerability from github – Published: 2026-01-13 18:31 – Updated: 2026-01-13 18:31

Details

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

tpm: Cap the number of PCR banks

tpm2_get_pcr_allocation() does not cap any upper limit for the number of banks. Cap the limit to eight banks so that out of bounds values coming from external I/O cause on only limited harm.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-71077"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-13T16:16:07Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntpm: Cap the number of PCR banks\n\ntpm2_get_pcr_allocation() does not cap any upper limit for the number of\nbanks. Cap the limit to eight banks so that out of bounds values coming\nfrom external I/O cause on only limited harm.",
  "id": "GHSA-cx57-3hc8-q627",
  "modified": "2026-01-13T18:31:06Z",
  "published": "2026-01-13T18:31:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71077"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/858344bc9210bea9ab2bdc7e9e331ba84c164e50"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b69492161c056d36789aee42a87a33c18c8ed5e1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ceb70d31da5671d298bad94ae6c20e4bbb800f96"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d88481653d74d622d1d0d2c9bad845fc2cc6fd23"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/faf07e611dfa464b201223a7253e9dc5ee0f3c9e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-71077 (GCVE-0-2025-71077)

Vulnerability from cvelistv5 – Published: 2026-01-13 15:31 – Updated: 2026-01-13 15:31

Title

tpm: Cap the number of PCR banks

Summary

In the Linux kernel, the following vulnerability has been resolved: tpm: Cap the number of PCR banks tpm2_get_pcr_allocation() does not cap any upper limit for the number of banks. Cap the limit to eight banks so that out of bounds values coming from external I/O cause on only limited harm.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/ceb70d31da5671d29…
	https://git.kernel.org/stable/c/d88481653d74d622d…
	https://git.kernel.org/stable/c/b69492161c056d367…
	https://git.kernel.org/stable/c/858344bc9210bea9a…
	https://git.kernel.org/stable/c/faf07e611dfa464b2…

Impacted products

Vendor

Product

Version

Linux

Affected: bcfff8384f6c4e6627676ef07ccad9cfacd67849 , < ceb70d31da5671d298bad94ae6c20e4bbb800f96 (git)
Affected: bcfff8384f6c4e6627676ef07ccad9cfacd67849 , < d88481653d74d622d1d0d2c9bad845fc2cc6fd23 (git)
Affected: bcfff8384f6c4e6627676ef07ccad9cfacd67849 , < b69492161c056d36789aee42a87a33c18c8ed5e1 (git)
Affected: bcfff8384f6c4e6627676ef07ccad9cfacd67849 , < 858344bc9210bea9ab2bdc7e9e331ba84c164e50 (git)
Affected: bcfff8384f6c4e6627676ef07ccad9cfacd67849 , < faf07e611dfa464b201223a7253e9dc5ee0f3c9e (git)

Linux

Affected: 5.1
Unaffected: 0 , < 5.1 (semver)
Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.3 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/char/tpm/tpm-chip.c",
            "drivers/char/tpm/tpm1-cmd.c",
            "drivers/char/tpm/tpm2-cmd.c",
            "include/linux/tpm.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ceb70d31da5671d298bad94ae6c20e4bbb800f96",
              "status": "affected",
              "version": "bcfff8384f6c4e6627676ef07ccad9cfacd67849",
              "versionType": "git"
            },
            {
              "lessThan": "d88481653d74d622d1d0d2c9bad845fc2cc6fd23",
              "status": "affected",
              "version": "bcfff8384f6c4e6627676ef07ccad9cfacd67849",
              "versionType": "git"
            },
            {
              "lessThan": "b69492161c056d36789aee42a87a33c18c8ed5e1",
              "status": "affected",
              "version": "bcfff8384f6c4e6627676ef07ccad9cfacd67849",
              "versionType": "git"
            },
            {
              "lessThan": "858344bc9210bea9ab2bdc7e9e331ba84c164e50",
              "status": "affected",
              "version": "bcfff8384f6c4e6627676ef07ccad9cfacd67849",
              "versionType": "git"
            },
            {
              "lessThan": "faf07e611dfa464b201223a7253e9dc5ee0f3c9e",
              "status": "affected",
              "version": "bcfff8384f6c4e6627676ef07ccad9cfacd67849",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/char/tpm/tpm-chip.c",
            "drivers/char/tpm/tpm1-cmd.c",
            "drivers/char/tpm/tpm2-cmd.c",
            "include/linux/tpm.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.1"
            },
            {
              "lessThan": "5.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.160",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.120",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.64",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.3",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19-rc1",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntpm: Cap the number of PCR banks\n\ntpm2_get_pcr_allocation() does not cap any upper limit for the number of\nbanks. Cap the limit to eight banks so that out of bounds values coming\nfrom external I/O cause on only limited harm."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-13T15:31:29.435Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ceb70d31da5671d298bad94ae6c20e4bbb800f96"
        },
        {
          "url": "https://git.kernel.org/stable/c/d88481653d74d622d1d0d2c9bad845fc2cc6fd23"
        },
        {
          "url": "https://git.kernel.org/stable/c/b69492161c056d36789aee42a87a33c18c8ed5e1"
        },
        {
          "url": "https://git.kernel.org/stable/c/858344bc9210bea9ab2bdc7e9e331ba84c164e50"
        },
        {
          "url": "https://git.kernel.org/stable/c/faf07e611dfa464b201223a7253e9dc5ee0f3c9e"
        }
      ],
      "title": "tpm: Cap the number of PCR banks",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71077",
    "datePublished": "2026-01-13T15:31:29.435Z",
    "dateReserved": "2026-01-13T15:30:19.648Z",
    "dateUpdated": "2026-01-13T15:31:29.435Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-CX57-3HC8-Q627

CVE-2025-71077 (GCVE-0-2025-71077)

Tags

Sightings

Nomenclature