{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98405",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.347Z",
        "datePublished": "2026-10-14T13:27:40.589Z",
        "dateUpdated": "2026-10-14T13:27:40.589Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-14T13:27:40.589Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix missing iov bounds check in parse_posix_sids()\n\nIn parse_posix_sids(), sidsbuf_end is calculated using the server-supplied\nout_len without being validated against the actual length of the received\niov (iov_len).\n\nIf a server provides an inflated out_len, sidsbuf_end will point past the\nend of the iov. This defeats the bounds guards in posix_info_sid_size(),\nallowing out-of-bounds reads into adjacent kernel memory.\n\nFix this by rejecting responses where the calculated sidsbuf_end would\nexceed the received iov boundaries or cause pointer wraparound."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/smb/client/smb2inode.c"
                    ],
                    "versions": [
                        {
                            "version": "a90f37e3d7acfd9824f162830583bbf7846fe252",
                            "lessThan": "d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a90f37e3d7acfd9824f162830583bbf7846fe252",
                            "lessThan": "b862996e5105be1293da9cdc85da77b76021c3bd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a90f37e3d7acfd9824f162830583bbf7846fe252",
                            "lessThan": "2f8ed71aaaba3bc8b19cd9930cc62e63e142b299",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a90f37e3d7acfd9824f162830583bbf7846fe252",
                            "lessThan": "eac6917a42899aad0617bbf04798c5dd946a1fe5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a90f37e3d7acfd9824f162830583bbf7846fe252",
                            "lessThan": "b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/smb/client/smb2inode.c"
                    ],
                    "versions": [
                        {
                            "version": "6.6.32",
                            "lessThan": "6.6.158",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.32",
                            "lessThan": "6.12.112",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.32",
                            "lessThan": "6.18.54",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.32",
                            "lessThan": "7.2.8",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.32",
                            "lessThan": "7.3-rc4",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6.32",
                                    "versionEndExcluding": "6.6.158"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6.32",
                                    "versionEndExcluding": "6.12.112"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6.32",
                                    "versionEndExcluding": "6.18.54"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6.32",
                                    "versionEndExcluding": "7.2.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6.32",
                                    "versionEndExcluding": "7.3-rc4"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b862996e5105be1293da9cdc85da77b76021c3bd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2f8ed71aaaba3bc8b19cd9930cc62e63e142b299"
                },
                {
                    "url": "https://git.kernel.org/stable/c/eac6917a42899aad0617bbf04798c5dd946a1fe5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc"
                }
            ],
            "title": "smb: client: fix missing iov bounds check in parse_posix_sids()",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}