Vulnerability-Lookup

FKIE_CVE-2024-42255

Vulnerability from fkie_nvd - Published: 2024-08-08 09:15 - Updated: 2026-06-17 07:49

Severity

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: tpm: Use auth only after NULL check in tpm_buf_check_hmac_response() Dereference auth after NULL check in tpm_buf_check_hmac_response(). Otherwise, unless tpm2_sessions_init() was called, a call can cause NULL dereference, when TCG_TPM2_HMAC is enabled. [jarkko: adjusted the commit message.]

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7dc357d343f134bf59815ff6098b93503ec8a23b	Patch
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b9afbb9a0c734197c59c43610071041044bf1562	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/char/tpm/tpm2-sessions.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b9afbb9a0c734197c59c43610071041044bf1562",
              "status": "affected",
              "version": "7ca110f2679b7d1f3ac1afc90e6ffbf0af3edf0d",
              "versionType": "git"
            },
            {
              "lessThan": "7dc357d343f134bf59815ff6098b93503ec8a23b",
              "status": "affected",
              "version": "7ca110f2679b7d1f3ac1afc90e6ffbf0af3edf0d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
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          "cpeMatch": [
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  "descriptions": [
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntpm: Use auth only after NULL check in tpm_buf_check_hmac_response()\n\nDereference auth after NULL check in tpm_buf_check_hmac_response().\nOtherwise, unless tpm2_sessions_init() was called, a call can cause NULL\ndereference, when TCG_TPM2_HMAC is enabled.\n\n[jarkko: adjusted the commit message.]"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tpm: use autenticaci\u00f3n solo despu\u00e9s de la verificaci\u00f3n NULL en tpm_buf_check_hmac_response() Desreferenciar la autenticaci\u00f3n despu\u00e9s de la verificaci\u00f3n NULL en tpm_buf_check_hmac_response(). De lo contrario, a menos que se haya llamado a tpm2_sessions_init(), una llamada puede causar una desreferencia NULL, cuando TCG_TPM2_HMAC est\u00e1 habilitado. [jarkko: ajust\u00f3 el mensaje de confirmaci\u00f3n.]"
    }
  ],
  "id": "CVE-2024-42255",
  "lastModified": "2026-06-17T07:49:06.940",
  "metrics": {
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T16:13:03.203312Z",
          "version": "2.0.3"
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  "published": "2024-08-08T09:15:08.470",
  "references": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}

CVE-2024-42255 (GCVE-0-2024-42255)

Vulnerability from cvelistv5 – Published: 2024-08-08 08:49 – Updated: 2026-05-11 20:28

Title

tpm: Use auth only after NULL check in tpm_buf_check_hmac_response()

Summary

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 16:13 UTC

Assigner

Linux mitre root Scorecard

References

2 references

URL	Tags
https://git.kernel.org/stable/c/b9afbb9a0c734197c…
https://git.kernel.org/stable/c/7dc357d343f134bf5…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7ca110f2679b7d1f3ac1afc90e6ffbf0af3edf0d , < b9afbb9a0c734197c59c43610071041044bf1562 (git) Affected: 7ca110f2679b7d1f3ac1afc90e6ffbf0af3edf0d , < 7dc357d343f134bf59815ff6098b93503ec8a23b (git)
Linux	Linux	Affected: 6.10 Unaffected: 0 , < 6.10 (semver) Unaffected: 6.10.1 , ≤ 6.10.* (semver) Unaffected: 6.11 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
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        "metrics": [
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                "id": "CVE-2024-42255",
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                  },
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                "timestamp": "2024-09-10T16:13:03.203312Z",
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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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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FKIE_CVE-2024-42255

CVE-2024-42255 (GCVE-0-2024-42255)

Tags

Sightings

Nomenclature

Related by attack behaviour