{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-46088",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-13T15:03:33.096Z",
        "datePublished": "2026-05-27T12:58:31.895Z",
        "dateUpdated": "2026-10-15T01:20:25.966Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-14T17:53:28.015Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: control: Validate buf_len before strnlen() in snd_ctl_elem_init_enum_names()\n\nsnd_ctl_elem_init_enum_names() advances pointer p through the names\nbuffer while decrementing buf_len. If buf_len reaches zero but items\nremain, the next iteration calls strnlen(p, 0).\n\nWhile strnlen(p, 0) returns 0 and would hit the existing name_len == 0\nerror path, CONFIG_FORTIFY_SOURCE's fortified strnlen() first checks\nmaxlen against __builtin_dynamic_object_size(). When Clang loses track\nof p's object size inside the loop, this triggers a BRK exception panic\nbefore the return value is examined.\n\nAdd a buf_len == 0 guard at the loop entry to prevent calling fortified\nstrnlen() on an exhausted buffer.\n\nFound by kernel fuzz testing through Xiaomi Smartphone."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "sound/core/control.c"
                    ],
                    "versions": [
                        {
                            "version": "8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4",
                            "lessThan": "708f6ec9bcdf58bfd561409110baaf4fd3be4ea3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4",
                            "lessThan": "bfcbb4994da9e979c4bcfcf24aaaac69e457e48e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4",
                            "lessThan": "a470f7cabc4df72d9bd132f5719a8717292bb440",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4",
                            "lessThan": "1fbe46d2b72754d8bd580e13e59ccb5d3d0e8cb0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4",
                            "lessThan": "8ba0214c3dd32b8ec652947e3f2bc5b8f6e6be9e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4",
                            "lessThan": "654c818a69c21d2bea4e8fd9eae7da865df9a5c8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4",
                            "lessThan": "82012fd3e78a14360fbc2f1a7491589896704f97",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4",
                            "lessThan": "e0da8a8cac74f4b9f577979d131f0d2b88a84487",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "sound/core/control.c"
                    ],
                    "versions": [
                        {
                            "version": "3.2",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.2",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.258",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.209",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.175",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.140",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.86",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.27",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.4",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "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": "3.2",
                                    "versionEndExcluding": "5.10.258"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2",
                                    "versionEndExcluding": "5.15.209"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2",
                                    "versionEndExcluding": "6.1.175"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2",
                                    "versionEndExcluding": "6.6.140"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2",
                                    "versionEndExcluding": "6.12.86"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2",
                                    "versionEndExcluding": "6.18.27"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2",
                                    "versionEndExcluding": "7.0.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.2",
                                    "versionEndExcluding": "7.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/708f6ec9bcdf58bfd561409110baaf4fd3be4ea3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bfcbb4994da9e979c4bcfcf24aaaac69e457e48e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a470f7cabc4df72d9bd132f5719a8717292bb440"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1fbe46d2b72754d8bd580e13e59ccb5d3d0e8cb0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8ba0214c3dd32b8ec652947e3f2bc5b8f6e6be9e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/654c818a69c21d2bea4e8fd9eae7da865df9a5c8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/82012fd3e78a14360fbc2f1a7491589896704f97"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e0da8a8cac74f4b9f577979d131f0d2b88a84487"
                }
            ],
            "title": "ALSA: control: Validate buf_len before strnlen() in snd_ctl_elem_init_enum_names()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
                "x_adpType": "supplier",
                "providerMetadata": {
                    "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
                    "shortName": "siemens-SADP",
                    "dateUpdated": "2026-10-15T01:20:25.966Z"
                },
                "affected": [
                    {
                        "vendor": "Siemens",
                        "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
                        "versions": [
                            {
                                "status": "affected",
                                "version": "0",
                                "lessThan": "*",
                                "versionType": "custom"
                            }
                        ],
                        "defaultStatus": "unknown"
                    }
                ],
                "references": [
                    {
                        "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
                    }
                ]
            }
        ]
    }
}