{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98167",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.321Z",
        "datePublished": "2026-10-06T08:44:12.731Z",
        "dateUpdated": "2026-10-19T09:14:58.765Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:14:58.765Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix server->total_read for compound encrypted PDUs\n\nIn receive_encrypted_standard(), server->total_read is left at the\nfull decrypted frame size when walking sub-PDUs of a compound encrypted\nframe. As a result, cifs_handle_standard() passes this full size\nto smb2_check_message(), causing the PDU length guards to incorrectly\nvalidate the entire compound frame instead of the current sub-PDU.\n\nThis allows truncated non-last sub-PDUs to bypass length validation,\nleading to out-of-bounds reads in smb2_get_data_area_len().\n\nFix this by setting server->total_read to the true length of the\ncurrent sub-PDU: next_cmd for non-last sub-PDUs, and the remaining\npdu_length for the last one."
                }
            ],
            "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"
                    ],
                    "versions": [
                        {
                            "version": "b24df3e30cbf48255db866720fb71f14bf9d2f39",
                            "lessThan": "8703539d22fdbc13dd2db090ee199c3a427b8ea0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b24df3e30cbf48255db866720fb71f14bf9d2f39",
                            "lessThan": "e78fc1d240b27349b45a0f1c3e3c2c401d7e230d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b24df3e30cbf48255db866720fb71f14bf9d2f39",
                            "lessThan": "a46eb242e9eef3a3897d166748b23303c516e870",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b24df3e30cbf48255db866720fb71f14bf9d2f39",
                            "lessThan": "ebb8a075fdc7af3d196a4f158a0e18dbc394c0e3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b24df3e30cbf48255db866720fb71f14bf9d2f39",
                            "lessThan": "282b72f9a7ef31296c48366db4128882999cc048",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b24df3e30cbf48255db866720fb71f14bf9d2f39",
                            "lessThan": "f73726b83e4756fdaa099e1bc1143293bd57ad79",
                            "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"
                    ],
                    "versions": [
                        {
                            "version": "4.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "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": "4.19",
                                    "versionEndExcluding": "6.1.189"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.6.158"
                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "7.2.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "7.3"
                                }
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                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/8703539d22fdbc13dd2db090ee199c3a427b8ea0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e78fc1d240b27349b45a0f1c3e3c2c401d7e230d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a46eb242e9eef3a3897d166748b23303c516e870"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ebb8a075fdc7af3d196a4f158a0e18dbc394c0e3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/282b72f9a7ef31296c48366db4128882999cc048"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f73726b83e4756fdaa099e1bc1143293bd57ad79"
                }
            ],
            "title": "smb: client: fix server->total_read for compound encrypted PDUs",
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}