{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-89794",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.766Z",
        "datePublished": "2026-09-16T10:30:25.592Z",
        "dateUpdated": "2026-10-19T08:52:49.112Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:52:49.112Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: zero pipe read compound padding\n\nCompound response handling extends the last response iov to an eight-byte\nboundary.\n\nsmb2_read_pipe() allocates only the payload size, so the alignment padding\ncan expose up to seven bytes of uninitialized kernel heap memory.\n\nAllocate the aligned size and clear the unused tail before pinning the\nresponse buffer."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/smb/server/smb2pdu.c"
                    ],
                    "versions": [
                        {
                            "version": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d",
                            "lessThan": "f188a400dd5285fec5a84548fe8dca49eee01155",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d",
                            "lessThan": "d83a9de7cecd401c3d3e00ed6371194dcd7313e4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d",
                            "lessThan": "be15b8da4a82cf1e1f9880b2661b90770606eec1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d",
                            "lessThan": "73f860489e3be2245598d1819226304fc5b87291",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f2283680a80571ca82d710bc6ecd8f8beac67d63",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9f297df20d93411c0b4ddad7f88ba04a7cd36e77",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5.15.145",
                            "lessThan": "5.16",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.71",
                            "lessThan": "6.2",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/smb/server/smb2pdu.c"
                    ],
                    "versions": [
                        {
                            "version": "6.6",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.6",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.51",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.5",
                            "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": "6.6",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "6.18.51"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "7.2.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "7.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15.145"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1.71"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/f188a400dd5285fec5a84548fe8dca49eee01155"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d83a9de7cecd401c3d3e00ed6371194dcd7313e4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/be15b8da4a82cf1e1f9880b2661b90770606eec1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/73f860489e3be2245598d1819226304fc5b87291"
                }
            ],
            "title": "ksmbd: zero pipe read compound padding",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}