Vulnerability-Lookup

GHSA-9H5H-WJM4-4JQG

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31

Details

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

crypto: drbg - Fix returning success on failure in CTR_DRBG

drbg_ctr_generate() sometimes returns success when it fails, leaving the output buffer uninitialized. Fix it.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64306"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:11Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: drbg - Fix returning success on failure in CTR_DRBG\n\ndrbg_ctr_generate() sometimes returns success when it fails, leaving the\noutput buffer uninitialized.  Fix it.",
  "id": "GHSA-9h5h-wjm4-4jqg",
  "modified": "2026-07-25T12:31:30Z",
  "published": "2026-07-25T12:31:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64306"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/074db6db03a0aaa78f05ca9d4838053713796665"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/23b8b188cb32e5531d0f8d3af9506f8959cb369e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/75597e8774f319152744d24e0683d9393540a951"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b03312491f9fe6ba4d60c4023e7e61d2d1fed96"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a9e886f73dd717027028bb7e3bbca93601ecdfc7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bbbac12083eff489b35d848332f0dff311131344"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc42fb40171c249bb859071d81b4eb007398a0bc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-64306 (GCVE-0-2026-64306)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:49 – Updated: 2026-07-25 08:49

Title

crypto: drbg - Fix returning success on failure in CTR_DRBG

Summary

In the Linux kernel, the following vulnerability has been resolved: crypto: drbg - Fix returning success on failure in CTR_DRBG drbg_ctr_generate() sometimes returns success when it fails, leaving the output buffer uninitialized. Fix it.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/074db6db03a0aaa78…
https://git.kernel.org/stable/c/7b03312491f9fe6ba…
https://git.kernel.org/stable/c/75597e8774f319152…
https://git.kernel.org/stable/c/cc42fb40171c249bb…
https://git.kernel.org/stable/c/bbbac12083eff489b…
https://git.kernel.org/stable/c/23b8b188cb32e5531…
https://git.kernel.org/stable/c/a9e886f73dd717027…
https://git.kernel.org/stable/c/39a31ad9e2a5ed7e9…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: cde001e4c3c3625c60b68a83eb1f1c2572dee07a , < 074db6db03a0aaa78f05ca9d4838053713796665 (git) Affected: cde001e4c3c3625c60b68a83eb1f1c2572dee07a , < 7b03312491f9fe6ba4d60c4023e7e61d2d1fed96 (git) Affected: cde001e4c3c3625c60b68a83eb1f1c2572dee07a , < 75597e8774f319152744d24e0683d9393540a951 (git) Affected: cde001e4c3c3625c60b68a83eb1f1c2572dee07a , < cc42fb40171c249bb859071d81b4eb007398a0bc (git) Affected: cde001e4c3c3625c60b68a83eb1f1c2572dee07a , < bbbac12083eff489b35d848332f0dff311131344 (git) Affected: cde001e4c3c3625c60b68a83eb1f1c2572dee07a , < 23b8b188cb32e5531d0f8d3af9506f8959cb369e (git) Affected: cde001e4c3c3625c60b68a83eb1f1c2572dee07a , < a9e886f73dd717027028bb7e3bbca93601ecdfc7 (git) Affected: cde001e4c3c3625c60b68a83eb1f1c2572dee07a , < 39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b (git) Affected: f60b0fa8bbddde66f1d197be07120264b555c84a (git) Affected: 3.12.44 , < 3.13 (semver)
Linux	Linux	Affected: 4.1 Unaffected: 0 , < 4.1 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)

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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "crypto/drbg.c"
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          "vendor": "Linux",
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              "version": "6.6.145",
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              "version": "6.18.39",
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              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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    "datePublished": "2026-07-25T08:49:40.153Z",
    "dateReserved": "2026-07-19T15:36:31.779Z",
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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.

Detection rules are retrieved from Rulezet.

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.

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GHSA-9H5H-WJM4-4JQG

CVE-2026-64306 (GCVE-0-2026-64306)

Tags

Sightings

Nomenclature