{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43141",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:55.989Z",
        "datePublished": "2026-05-06T11:27:26.193Z",
        "dateUpdated": "2026-05-11T22:18:33.118Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:18:33.118Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut\n\nNumber of MW LUTs depends on NTB configuration and can be set to zero,\nin such scenario rounddown_pow_of_two will cause undefined behaviour and\nshould not be performed.\nThis patch ensures that rounddown_pow_of_two is called on valid value."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/ntb/hw/mscc/ntb_hw_switchtec.c"
                    ],
                    "versions": [
                        {
                            "version": "ec0467ccbdeb69a86c8729073057bda7bce00eec",
                            "lessThan": "d652ef399f131fcd5f8f34266167449ee7c9e5b3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ec0467ccbdeb69a86c8729073057bda7bce00eec",
                            "lessThan": "5590cd04d6845c01a6bad985a491c58af6fb5389",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ec0467ccbdeb69a86c8729073057bda7bce00eec",
                            "lessThan": "a11d03d116eef138a7249202bd772c8e61915aec",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ec0467ccbdeb69a86c8729073057bda7bce00eec",
                            "lessThan": "d0559d07afabfddaaded6a61a16154486b956764",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ec0467ccbdeb69a86c8729073057bda7bce00eec",
                            "lessThan": "2e4d5e8d86a969318340be95470bb76e52392082",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ec0467ccbdeb69a86c8729073057bda7bce00eec",
                            "lessThan": "a133e3caf844a3f56b6eef89ddaa66115874f6bd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ec0467ccbdeb69a86c8729073057bda7bce00eec",
                            "lessThan": "1a867d0d79a4a570a33f2f433919ad2bd7a27b67",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ec0467ccbdeb69a86c8729073057bda7bce00eec",
                            "lessThan": "186615f8855a0be4ee7d3fcd09a8ecc10e783b08",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/ntb/hw/mscc/ntb_hw_switchtec.c"
                    ],
                    "versions": [
                        {
                            "version": "4.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.252",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.202",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.165",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.128",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.75",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.16",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.6",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "4.15",
                                    "versionEndExcluding": "5.10.252"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "5.15.202"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.1.165"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.6.128"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.12.75"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.18.16"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.19.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d652ef399f131fcd5f8f34266167449ee7c9e5b3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5590cd04d6845c01a6bad985a491c58af6fb5389"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a11d03d116eef138a7249202bd772c8e61915aec"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d0559d07afabfddaaded6a61a16154486b956764"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2e4d5e8d86a969318340be95470bb76e52392082"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a133e3caf844a3f56b6eef89ddaa66115874f6bd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1a867d0d79a4a570a33f2f433919ad2bd7a27b67"
                },
                {
                    "url": "https://git.kernel.org/stable/c/186615f8855a0be4ee7d3fcd09a8ecc10e783b08"
                }
            ],
            "title": "ntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}