{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-71067",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:30:19.647Z",
        "datePublished": "2026-01-13T15:31:22.585Z",
        "dateUpdated": "2026-05-11T21:54:05.851Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:54:05.851Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: set dummy blocksize to read boot_block when mounting\n\nWhen mounting, sb->s_blocksize is used to read the boot_block without\nbeing defined or validated. Set a dummy blocksize before attempting to\nread the boot_block.\n\nThe issue can be triggered with the following syz reproducer:\n\n  mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./file1\\x00', 0x0)\n  r4 = openat$nullb(0xffffffffffffff9c, &(0x7f0000000040), 0x121403, 0x0)\n  ioctl$FS_IOC_SETFLAGS(r4, 0x40081271, &(0x7f0000000980)=0x4000)\n  mount(&(0x7f0000000140)=@nullb, &(0x7f0000000040)='./cgroup\\x00',\n        &(0x7f0000000000)='ntfs3\\x00', 0x2208004, 0x0)\n  syz_clone(0x88200200, 0x0, 0x0, 0x0, 0x0, 0x0)\n\nHere, the ioctl sets the bdev block size to 16384. During mount,\nget_tree_bdev_flags() calls sb_set_blocksize(sb, block_size(bdev)),\nbut since block_size(bdev) > PAGE_SIZE, sb_set_blocksize() leaves\nsb->s_blocksize at zero.\n\nLater, ntfs_init_from_boot() attempts to read the boot_block while\nsb->s_blocksize is still zero, which triggers the bug.\n\n[almaz.alexandrovich@paragon-software.com: changed comment style, added\nreturn value handling]"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ntfs3/super.c"
                    ],
                    "versions": [
                        {
                            "version": "28861e3bbd9e7ac4cd9c811aad71b4d116e27930",
                            "lessThan": "0c9327c8abf9c8f046e45008bb43d94d8ee5c6c5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "28861e3bbd9e7ac4cd9c811aad71b4d116e27930",
                            "lessThan": "44a38eb4f7876513db5a1bccde74de9bc4389d43",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "28861e3bbd9e7ac4cd9c811aad71b4d116e27930",
                            "lessThan": "4fff9a625da958a33191c8553a03283786f9f417",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "28861e3bbd9e7ac4cd9c811aad71b4d116e27930",
                            "lessThan": "b3c151fe8f543f1a0b8b5df16ce5d97afa5ec85a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "28861e3bbd9e7ac4cd9c811aad71b4d116e27930",
                            "lessThan": "d1693a7d5a38acf6424235a6070bcf5b186a360d",
                            "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/ntfs3/super.c"
                    ],
                    "versions": [
                        {
                            "version": "5.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.167",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.120",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.64",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.3",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19",
                            "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": "5.15",
                                    "versionEndExcluding": "6.1.167"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.6.120"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.12.64"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.18.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.19"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0c9327c8abf9c8f046e45008bb43d94d8ee5c6c5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/44a38eb4f7876513db5a1bccde74de9bc4389d43"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4fff9a625da958a33191c8553a03283786f9f417"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b3c151fe8f543f1a0b8b5df16ce5d97afa5ec85a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d1693a7d5a38acf6424235a6070bcf5b186a360d"
                }
            ],
            "title": "ntfs: set dummy blocksize to read boot_block when mounting",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}