Vulnerability-Lookup

GHSA-2MH9-R7M5-WV93

Vulnerability from github – Published: 2026-04-24 15:32 – Updated: 2026-04-28 21:36

Details

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

crash_dump: don't log dm-crypt key bytes in read_key_from_user_keying

When debug logging is enabled, read_key_from_user_keying() logs the first 8 bytes of the key payload and partially exposes the dm-crypt key. Stop logging any key bytes.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-31543"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-24T15:16:28Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrash_dump: don\u0027t log dm-crypt key bytes in read_key_from_user_keying\n\nWhen debug logging is enabled, read_key_from_user_keying() logs the first\n8 bytes of the key payload and partially exposes the dm-crypt key.  Stop\nlogging any key bytes.",
  "id": "GHSA-2mh9-r7m5-wv93",
  "modified": "2026-04-28T21:36:01Z",
  "published": "2026-04-24T15:32:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31543"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/36f46b0e36892eba08978eef7502ff3c94ddba77"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4897bd307ba8757c31a3325ba6730961be606016"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed8d91f469845d62d44c565a55d2ab1767969357"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-31543 (GCVE-0-2026-31543)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:33 – Updated: 2026-05-11 22:10

Title

crash_dump: don't log dm-crypt key bytes in read_key_from_user_keying

Summary

In the Linux kernel, the following vulnerability has been resolved: crash_dump: don't log dm-crypt key bytes in read_key_from_user_keying When debug logging is enabled, read_key_from_user_keying() logs the first 8 bytes of the key payload and partially exposes the dm-crypt key. Stop logging any key bytes.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/4897bd307ba8757c3…
https://git.kernel.org/stable/c/ed8d91f469845d62d…
https://git.kernel.org/stable/c/36f46b0e36892eba0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 479e58549b0fa7e80f1e0b9e69e0a2a8e6711132 , < 4897bd307ba8757c31a3325ba6730961be606016 (git) Affected: 479e58549b0fa7e80f1e0b9e69e0a2a8e6711132 , < ed8d91f469845d62d44c565a55d2ab1767969357 (git) Affected: 479e58549b0fa7e80f1e0b9e69e0a2a8e6711132 , < 36f46b0e36892eba08978eef7502ff3c94ddba77 (git)
Linux	Linux	Affected: 6.16 Unaffected: 0 , < 6.16 (semver) Unaffected: 6.18.20 , ≤ 6.18.* (semver) Unaffected: 6.19.10 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/crash_dump_dm_crypt.c"
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              "versionType": "git"
            }
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          "versions": [
            {
              "status": "affected",
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            },
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            },
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              "version": "6.19.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
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        }
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrash_dump: don\u0027t log dm-crypt key bytes in read_key_from_user_keying\n\nWhen debug logging is enabled, read_key_from_user_keying() logs the first\n8 bytes of the key payload and partially exposes the dm-crypt key.  Stop\nlogging any key bytes."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:10:48.645Z",
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    "datePublished": "2026-04-24T14:33:12.163Z",
    "dateReserved": "2026-03-09T15:48:24.114Z",
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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.
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GHSA-2MH9-R7M5-WV93

CVE-2026-31543 (GCVE-0-2026-31543)

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