{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64256",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T15:36:31.773Z",
        "datePublished": "2026-07-25T08:49:08.676Z",
        "dateUpdated": "2026-08-17T04:52:08.656Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T04:52:08.656Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: don't wrap around quota ids in dqiterate\n\nLOLLM noticed that q_id is an unsigned 32-bit variable.  If it happens\nto be set to XFS_DQ_ID_MAX due to a filesystem that actually has a dquot\nfor ID_MAX, then this addition will truncate to zero and the iteration\nstarts over.  Fix this by casting to u64."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/xfs/scrub/dqiterate.c"
                    ],
                    "versions": [
                        {
                            "version": "21d7500929c8a0b10e22a6755850c6f9a9280284",
                            "lessThan": "249e311c2ba392ceaf9ebfc145a46922946f069a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "21d7500929c8a0b10e22a6755850c6f9a9280284",
                            "lessThan": "d1c4c40599c376aeb0c93068a2ae344e79ee4b90",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "21d7500929c8a0b10e22a6755850c6f9a9280284",
                            "lessThan": "2b14fe1e0924c6b901f4256456342569c5397abe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "21d7500929c8a0b10e22a6755850c6f9a9280284",
                            "lessThan": "d766e4e5e85d829629c3ba503802fe1303d7b591",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/xfs/scrub/dqiterate.c"
                    ],
                    "versions": [
                        {
                            "version": "6.8",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.8",
                            "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": "6.8",
                                    "versionEndExcluding": "6.12.96"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.8",
                                    "versionEndExcluding": "6.18.39"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.8",
                                    "versionEndExcluding": "7.1.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.8",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/249e311c2ba392ceaf9ebfc145a46922946f069a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d1c4c40599c376aeb0c93068a2ae344e79ee4b90"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2b14fe1e0924c6b901f4256456342569c5397abe"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d766e4e5e85d829629c3ba503802fe1303d7b591"
                }
            ],
            "title": "xfs: don't wrap around quota ids in dqiterate",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}