{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98170",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.322Z",
        "datePublished": "2026-10-06T08:44:15.138Z",
        "dateUpdated": "2026-10-21T12:54:48.314Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:54:48.314Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix OOB struct field reads in move_smb2_ea_to_cifs()\n\nIn move_smb2_ea_to_cifs(), the while (src_size > 0) loop condition is\ninsufficient. It allows iteration to continue even if the remaining\nsrc_size is too small to contain a complete smb2_ea_info structure.\nConsequently, reads of ea_name_length and ea_value_length can occur\nout-of-bounds.\n\nFix this by ensuring src_size >= sizeof(*src) before attempting to read\nany structure fields. Additionally, reject any next_entry_offset that is\nsmaller than sizeof(*src) or that would advance the pointer beyond the\navailable buffer.\n\nNote that for calls where the server returns a malformed EA list, the\nerror returned to userspace changes from -ENODATA (getxattr) or\n-ERANGE (listxattr) to -EIO. This correctly signals a server protocol\nerror rather than misleadingly indicating \"attribute not present\" or\n\"output buffer too small\"."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/smb/client/smb2ops.c",
                        "fs/smb/client/trace.h"
                    ],
                    "versions": [
                        {
                            "version": "95907fea4fd8ccc736e0a428e52159b4d42b9958",
                            "lessThan": "61812323c037a94e2e7f0db7ee740c34b126bffe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "95907fea4fd8ccc736e0a428e52159b4d42b9958",
                            "lessThan": "d3546cecbf81d98bf3b472d341f981eb48c04f47",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "95907fea4fd8ccc736e0a428e52159b4d42b9958",
                            "lessThan": "34a3942e787b9c59758115bd65fe1ec89d68c7a4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "95907fea4fd8ccc736e0a428e52159b4d42b9958",
                            "lessThan": "13efcd37a9b3d6ffa1579c3dda3e29c893ed9bca",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "95907fea4fd8ccc736e0a428e52159b4d42b9958",
                            "lessThan": "eeb5ef6083e1cefa2ef75041b5597ff228b8d7bb",
                            "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/smb/client/smb2ops.c",
                        "fs/smb/client/trace.h"
                    ],
                    "versions": [
                        {
                            "version": "4.14",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.14",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.112",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.54",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.8",
                            "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": "4.14",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.14",
                                    "versionEndExcluding": "6.12.112"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.14",
                                    "versionEndExcluding": "6.18.54"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.14",
                                    "versionEndExcluding": "7.2.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.14",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/61812323c037a94e2e7f0db7ee740c34b126bffe"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d3546cecbf81d98bf3b472d341f981eb48c04f47"
                },
                {
                    "url": "https://git.kernel.org/stable/c/34a3942e787b9c59758115bd65fe1ec89d68c7a4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/13efcd37a9b3d6ffa1579c3dda3e29c893ed9bca"
                },
                {
                    "url": "https://git.kernel.org/stable/c/eeb5ef6083e1cefa2ef75041b5597ff228b8d7bb"
                }
            ],
            "title": "smb: client: fix OOB struct field reads in move_smb2_ea_to_cifs()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}