{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64306",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T15:36:31.779Z",
        "datePublished": "2026-07-25T08:49:40.153Z",
        "dateUpdated": "2026-08-17T04:53:05.476Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T04:53:05.476Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "crypto/drbg.c"
                    ],
                    "versions": [
                        {
                            "version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
                            "lessThan": "074db6db03a0aaa78f05ca9d4838053713796665",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
                            "lessThan": "7b03312491f9fe6ba4d60c4023e7e61d2d1fed96",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
                            "lessThan": "75597e8774f319152744d24e0683d9393540a951",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
                            "lessThan": "cc42fb40171c249bb859071d81b4eb007398a0bc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
                            "lessThan": "bbbac12083eff489b35d848332f0dff311131344",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
                            "lessThan": "23b8b188cb32e5531d0f8d3af9506f8959cb369e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
                            "lessThan": "a9e886f73dd717027028bb7e3bbca93601ecdfc7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
                            "lessThan": "39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f60b0fa8bbddde66f1d197be07120264b555c84a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3.12.44",
                            "lessThan": "3.13",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "crypto/drbg.c"
                    ],
                    "versions": [
                        {
                            "version": "4.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.1",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.261",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.212",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.178",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.96",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.39",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.4",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "5.10.261"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "5.15.212"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "6.1.178"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "6.6.145"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "6.12.96"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "6.18.39"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "7.1.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.1",
                                    "versionEndExcluding": "7.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.12.44"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/074db6db03a0aaa78f05ca9d4838053713796665"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7b03312491f9fe6ba4d60c4023e7e61d2d1fed96"
                },
                {
                    "url": "https://git.kernel.org/stable/c/75597e8774f319152744d24e0683d9393540a951"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cc42fb40171c249bb859071d81b4eb007398a0bc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bbbac12083eff489b35d848332f0dff311131344"
                },
                {
                    "url": "https://git.kernel.org/stable/c/23b8b188cb32e5531d0f8d3af9506f8959cb369e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a9e886f73dd717027028bb7e3bbca93601ecdfc7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b"
                }
            ],
            "title": "crypto: drbg - Fix returning success on failure in CTR_DRBG",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}