{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90333",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.803Z",
        "datePublished": "2026-09-17T16:08:46.805Z",
        "dateUpdated": "2026-10-21T12:51:03.593Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:51:03.593Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm-integrity: replace forgeable discard filler with a keyed sector marker\n\nThe discard-block check in dm_integrity_rw_tag() treats a stored tag\nof all 0xf6 bytes (DISCARD_FILLER) as proof a block was discarded and\nskips HMAC verification. allow_discards is only accepted in\ndm-integrity's standalone mode. An attacker with raw write access to\nthe backing device, but without the integrity key, can stamp any block\nwith an all-0xf6 tag and have it served as authentic.\n\nAdd a new \"allow_discards_keyed\" target argument that marks discarded\nblocks with a keyed checksum of (salt || sector) instead, computed by\nintegrity_discard_checksum()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "Documentation/admin-guide/device-mapper/dm-ima.rst",
                        "Documentation/admin-guide/device-mapper/dm-integrity.rst",
                        "drivers/md/dm-integrity.c"
                    ],
                    "versions": [
                        {
                            "version": "84597a44a9d86ac949900441cea7da0af0f2f473",
                            "lessThan": "388c3f6496bb8083576d989e6d249ba9807c6b0b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "84597a44a9d86ac949900441cea7da0af0f2f473",
                            "lessThan": "5c58ea19a909ef6bed4f0f824e9cd7e30d7e4775",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "84597a44a9d86ac949900441cea7da0af0f2f473",
                            "lessThan": "6228722c27304e4682cddc1fede03898f87e4414",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "84597a44a9d86ac949900441cea7da0af0f2f473",
                            "lessThan": "68c5c42567bc462139128968ebbfadd0aefff519",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "Documentation/admin-guide/device-mapper/dm-ima.rst",
                        "Documentation/admin-guide/device-mapper/dm-integrity.rst",
                        "drivers/md/dm-integrity.c"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.114",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "5.7",
                                    "versionEndExcluding": "6.12.114"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/388c3f6496bb8083576d989e6d249ba9807c6b0b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5c58ea19a909ef6bed4f0f824e9cd7e30d7e4775"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6228722c27304e4682cddc1fede03898f87e4414"
                },
                {
                    "url": "https://git.kernel.org/stable/c/68c5c42567bc462139128968ebbfadd0aefff519"
                }
            ],
            "title": "dm-integrity: replace forgeable discard filler with a keyed sector marker",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}