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CVE-2025-40062 (GCVE-0-2025-40062)

Vulnerability from cvelistv5 – Published: 2025-10-28 11:48 – Updated: 2026-05-23 16:01
VLAI
Title
crypto: hisilicon/qm - set NULL to qm->debug.qm_diff_regs
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: hisilicon/qm - set NULL to qm->debug.qm_diff_regs When the initialization of qm->debug.acc_diff_reg fails, the probe process does not exit. However, after qm->debug.qm_diff_regs is freed, it is not set to NULL. This can lead to a double free when the remove process attempts to free it again. Therefore, qm->debug.qm_diff_regs should be set to NULL after it is freed.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: eda60520cfe3aba9f088c68ebd5bcbca9fc6ac3c , < a7836260d5121949ba734e840d42a86ab4a32fcc (git)
Affected: 7fc8d9a525b5c3f8dfa5ed50901e764d8ede7e1e , < 1750f1ec143ebabdbdfa013668665c9d5042c430 (git)
Affected: 8be0913389718e8d27c4f1d4537b5e1b99ed7739 , < a87a21a56244b8f4eb357f6bad879247005bbe38 (git)
Affected: 8be0913389718e8d27c4f1d4537b5e1b99ed7739 , < 7226a0650ad5705bd8d39a11be270fa21ed1e6a5 (git)
Affected: 8be0913389718e8d27c4f1d4537b5e1b99ed7739 , < f0cafb02de883b3b413d34eb079c9680782a9cc1 (git)
Affected: e0a2d2df9ba7bd6bd7e0a9b6a5e3894f7e8445b3 (git)
Affected: 6.1.98 , < 6.1.156 (semver)
Affected: 6.6.39 , < 6.6.112 (semver)
Affected: 6.9.9 , < 6.10 (semver)
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Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.1.156 , ≤ 6.1.* (semver)
Unaffected: 6.6.112 , ≤ 6.6.* (semver)
Unaffected: 6.12.53 , ≤ 6.12.* (semver)
Unaffected: 6.17.3 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/crypto/hisilicon/debugfs.c"
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              "status": "unaffected",
              "version": "6.12.53",
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              "version": "6.18",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
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      ],
      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: hisilicon/qm - set NULL to qm-\u003edebug.qm_diff_regs\n\nWhen the initialization of qm-\u003edebug.acc_diff_reg fails,\nthe probe process does not exit. However, after qm-\u003edebug.qm_diff_regs is\nfreed, it is not set to NULL. This can lead to a double free when the\nremove process attempts to free it again. Therefore, qm-\u003edebug.qm_diff_regs\nshould be set to NULL after it is freed."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T16:01:17.923Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        {
          "url": "https://git.kernel.org/stable/c/a7836260d5121949ba734e840d42a86ab4a32fcc"
        },
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        },
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        },
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          "url": "https://git.kernel.org/stable/c/7226a0650ad5705bd8d39a11be270fa21ed1e6a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/f0cafb02de883b3b413d34eb079c9680782a9cc1"
        }
      ],
      "title": "crypto: hisilicon/qm - set NULL to qm-\u003edebug.qm_diff_regs",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40062",
    "datePublished": "2025-10-28T11:48:33.961Z",
    "dateReserved": "2025-04-16T07:20:57.158Z",
    "dateUpdated": "2026-05-23T16:01:17.923Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-40062",
      "date": "2026-09-17",
      "epss": "0.00187",
      "percentile": "0.08605"
    },
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:15:45+00:00",
      "cve": "CVE-2025-40062",
      "id": "CVE-2025-40062",
      "initial_release_date": "2025-10-28T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: crypto: hisilicon/qm - set NULL to qm-\u003edebug.qm_diff_regs",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40062.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.