{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98726",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.366Z",
        "datePublished": "2026-10-18T15:47:03.665Z",
        "dateUpdated": "2026-10-21T12:56:06.820Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:56:06.820Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-multipath: fix underflow in ANA log bounds checks\n\nThe number of ANA groups advertised through Identify Controller sizes the\nANA log buffer. The ANA log header and group descriptors independently\nsupply the number of groups and namespace IDs to parse.\n\nBoth bounds checks subtract an untrusted object size from ana_log_size\nbefore comparing the current offset. If the object is larger than the\nbuffer, the size_t subtraction underflows and lets the parser read beyond\nana_log_buf.\n\nCheck the current offset before the first subtraction and compare each\nobject size with the remaining buffer instead. This rejects inconsistent\nANA data before dereferencing a truncated group descriptor or walking an\noversized namespace ID array."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/nvme/host/multipath.c"
                    ],
                    "versions": [
                        {
                            "version": "0d0b660f214dc4905db7b6bc998bad0c16dfb1ba",
                            "lessThan": "3045128294d347fd38542ad6e174b1b34d9c0751",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0d0b660f214dc4905db7b6bc998bad0c16dfb1ba",
                            "lessThan": "03a0c21f0fd7a872953aae5714303d8f38d1e567",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0d0b660f214dc4905db7b6bc998bad0c16dfb1ba",
                            "lessThan": "49e8a3224c91fd5fbf22f4adcca6c8209cfdd6fe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0d0b660f214dc4905db7b6bc998bad0c16dfb1ba",
                            "lessThan": "e5cdb0c0a51e8ff49914ae16ef5360010c40cc85",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0d0b660f214dc4905db7b6bc998bad0c16dfb1ba",
                            "lessThan": "63fa2d9c9c37020bd2703fe2a6a38027b5abeb15",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/nvme/host/multipath.c"
                    ],
                    "versions": [
                        {
                            "version": "4.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.113",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.56",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.10",
                            "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": "4.19",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.12.113"
                                },
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                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.18.56"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "7.2.10"
                                },
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/3045128294d347fd38542ad6e174b1b34d9c0751"
                },
                {
                    "url": "https://git.kernel.org/stable/c/03a0c21f0fd7a872953aae5714303d8f38d1e567"
                },
                {
                    "url": "https://git.kernel.org/stable/c/49e8a3224c91fd5fbf22f4adcca6c8209cfdd6fe"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e5cdb0c0a51e8ff49914ae16ef5360010c40cc85"
                },
                {
                    "url": "https://git.kernel.org/stable/c/63fa2d9c9c37020bd2703fe2a6a38027b5abeb15"
                }
            ],
            "title": "nvme-multipath: fix underflow in ANA log bounds checks",
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}