{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80869",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.798Z",
        "datePublished": "2026-09-04T16:48:27.068Z",
        "dateUpdated": "2026-09-04T16:48:27.068Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-09-04T16:48:27.068Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: bound the attribute-list entry in ntfs_read_inode_mount()\n\nThe $MFT attribute-list walk in ntfs_read_inode_mount() validates each\nentry only with \"(u8 *)al_entry + 6 > al_end\" and\n\"(u8 *)al_entry + le16_to_cpu(al_entry->length) > al_end\", but then reads\nal_entry->lowest_vcn (an __le64 at offset 8) and al_entry->mft_reference\n(offset 16) -- fields beyond the 6 bytes proven in range. al_entry->length\nis attacker-controlled and only required non-zero, so a short entry (e.g.\nlength 8) placed at the tail passes both checks while the lowest_vcn /\nmft_reference reads fall past al_end.\n\nal_end is ni->attr_list + attr_list_size (the on-disk size); the buffer is\nkvzalloc(round_up(attr_list_size, SECTOR_SIZE)), so the sector rounding\nusually absorbs the over-read -- but when attr_list_size is a multiple of\nSECTOR_SIZE there is no slack and a crafted $MFT attribute list produces an\nout-of-bounds read at mount time.\n\nValidate the entry with ntfs_attr_list_entry_is_valid() (added in patch\n1/3) before dereferencing it, matching the bound the other attribute-list\nwalks now use. The validator already requires the length to cover the fixed\nheader, which makes the separate \"!al_entry->length\" check redundant, so\ndrop it too."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ntfs/inode.c"
                    ],
                    "versions": [
                        {
                            "version": "1e9ea7e04472d4e5e12e58c881eaacfb3e49b669",
                            "lessThan": "c7a7e48e71ce915ec4cbd6e9f355590c1ecbc29a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1e9ea7e04472d4e5e12e58c881eaacfb3e49b669",
                            "lessThan": "98634df5b1cb56c26299b7409227025ddb0167d8",
                            "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/inode.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/c7a7e48e71ce915ec4cbd6e9f355590c1ecbc29a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/98634df5b1cb56c26299b7409227025ddb0167d8"
                }
            ],
            "title": "ntfs: bound the attribute-list entry in ntfs_read_inode_mount()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}