{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-72188",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-09T03:40:39.911Z",
        "datePublished": "2026-08-15T05:53:49.593Z",
        "dateUpdated": "2026-08-17T05:41:17.414Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T05:41:17.414Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: sanitize MFT references returned from ntfs_lookup_inode_by_name()\n\nntfs_lookup_inode_by_name() returns MFT references read from directory\nindex entries on disk. These values are untrusted, but the function can\ncurrently return an error-marked MFT reference to its callers without\nvalidating it.\n\nCallers later decode lookup failures with MREF_ERR(). A crafted NTFS image\ncan set the MREF error bit while leaving the low bits as an arbitrary\nvalue, causing callers to consume a bogus pseudo-errno instead of treating\nthe lookup result as corrupted on-disk metadata.\n\nFix this at the source by normalizing every error-marked MFT reference\nreturned from ntfs_lookup_inode_by_name() to ERR_MREF(-EIO). Apply this to\nall four directory lookup return paths so every caller gets a validated\nresult without needing additional checks or an API change.\n\nThis keeps the sanitization in the common lookup helper, which is cleaner\nthan duplicating validation in each caller."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
                        "baseScore": 9.1,
                        "baseSeverity": "CRITICAL"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:N - fs/ntfs registers ntfs_export_ops; remote nfsd/ksmbd LOOKUP/OPEN/stat on an exported crafted NTFS volume reaches ntfs_lookup→ntfs_lookup_inode_by_name parsing attacker-controlled INDX indexed_file values without local shell access.\nAC:L - The attacker fully controls on-disk directory index indexed_file MFT references and can set the ERR_MREF error bit with arbitrary low bits; decoding the forged pseudo-errno via MREF_ERR() is deterministic from a crafted image with no race or external timing.\nPR:N - Triggering needs only a malicious NTFS image (USB, loop, dual-boot disk) mounted by the host or lookup access to exported NTFS paths via NFS/SMB; no init-namespace root or CAP_SYS_ADMIN is required on the code path that consumes the bogus errno.\nUI:N - fill_super mount-time lookups (hiberfil.sys, $Quota) and subsequent local or remote path lookups call ntfs_lookup_inode_by_name as soon as the crafted volume is mounted or exported, without further per-attack cooperation beyond volume presentation.\nS:U - Forged errno handling perturbs VFS lookup and mount safety decisions within the host kernel/filesystem authority only; this is standard filesystem parsing abuse, not a VM escape, IOMMU bypass, or cross-security-boundary scope change.\nC:N - The flaw only mis-decodes error-marked MFT references into attacker-chosen errno values returned to callers; there is no out-of-bounds read, use-after-free, or other kernel memory disclosure primitive.\nI:H - Spoofing -ENOENT via error-bit indexed_file can add negative dentries for present index entries and make check_windows_hibernation_status/load_and_init_quota treat hiberfil.sys/$Quota as absent, bypassing hibernation/quota guards and permitting rw corruption of live Windows hibernation and NTFS metadata.\nA:H - Hibernation-check bypass allows rw I/O on a suspended Windows volume, corrupting hiberfil.sys and preventing resume; forged lookup errnos also leave persistent negative-cache and index inconsistencies that can render the volume or dependent OS unusable."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ntfs/dir.c"
                    ],
                    "versions": [
                        {
                            "version": "1e9ea7e04472d4e5e12e58c881eaacfb3e49b669",
                            "lessThan": "83f396d881c4fd312c7fd5fff2c157fc21104464",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1e9ea7e04472d4e5e12e58c881eaacfb3e49b669",
                            "lessThan": "d97a36bae86a9a4021562ded2987f904e6bcb1d7",
                            "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/ntfs/dir.c"
                    ],
                    "versions": [
                        {
                            "version": "7.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "7.1",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "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": "7.1",
                                    "versionEndExcluding": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "7.1",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/83f396d881c4fd312c7fd5fff2c157fc21104464"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d97a36bae86a9a4021562ded2987f904e6bcb1d7"
                }
            ],
            "title": "ntfs: sanitize MFT references returned from ntfs_lookup_inode_by_name()",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}