{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90327",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.802Z",
        "datePublished": "2026-09-17T16:08:42.017Z",
        "dateUpdated": "2026-10-19T09:01:44.321Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:01:44.321Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphonet: pep: do not write beyond optlen in getsockopt\n\npep_getsockopt() clamps the reported length to the caller's buffer with\nmin_t(), but then stores the value with put_user(val, (int __user *)\noptval), which always writes sizeof(int) bytes. A getsockopt() call with\nan optlen smaller than sizeof(int) thus reports the clamped length yet\nwrites a full int, one to three bytes past the user buffer.\n\nWrite the value with copy_to_user() bounded by len, so at most optlen\nbytes are copied, matching the length reported back to userspace."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/phonet/pep.c"
                    ],
                    "versions": [
                        {
                            "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
                            "lessThan": "6054fed6bad08b6d03973e8ffca7f0c9394d1c30",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
                            "lessThan": "eac733a0b6fe0a52d91f9f623425735ed50ac6c2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
                            "lessThan": "95e0ed2439dd1792eb454c68ae8d10f30ffe3bff",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
                            "lessThan": "056eea1a2068ad2fb7c3093c5f1095268f87d0c7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
                            "lessThan": "1bf499e438da80455e258049bce60ffb3a53f3fa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
                            "lessThan": "c4487e4d5309de587479ecc2f5173b49586f46f4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
                            "lessThan": "f97022fefe6eb06ee18549d603420440f2959802",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
                            "lessThan": "77e5eb0e192aec6710c03ca8144582fd2af36ca4",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/phonet/pep.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.28",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.28",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.270",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "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": "2.6.28",
                                    "versionEndExcluding": "5.10.270"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.28",
                                    "versionEndExcluding": "5.15.221"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.28",
                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.28",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.28",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.28",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.28",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.28",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/6054fed6bad08b6d03973e8ffca7f0c9394d1c30"
                },
                {
                    "url": "https://git.kernel.org/stable/c/eac733a0b6fe0a52d91f9f623425735ed50ac6c2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/95e0ed2439dd1792eb454c68ae8d10f30ffe3bff"
                },
                {
                    "url": "https://git.kernel.org/stable/c/056eea1a2068ad2fb7c3093c5f1095268f87d0c7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1bf499e438da80455e258049bce60ffb3a53f3fa"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c4487e4d5309de587479ecc2f5173b49586f46f4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f97022fefe6eb06ee18549d603420440f2959802"
                },
                {
                    "url": "https://git.kernel.org/stable/c/77e5eb0e192aec6710c03ca8144582fd2af36ca4"
                }
            ],
            "title": "phonet: pep: do not write beyond optlen in getsockopt",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}