{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-31736",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-03-09T15:48:24.137Z",
        "datePublished": "2026-05-01T14:14:33.583Z",
        "dateUpdated": "2026-05-11T22:14:45.998Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:14:45.998Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_ppe: avoid NULL deref when gmac0 is disabled\n\nIf the gmac0 is disabled, the precheck for a valid ingress device will\ncause a NULL pointer deref and crash the system. This happens because\neth->netdev[0] will be NULL but the code will directly try to access\nnetdev_ops.\n\nInstead of just checking for the first net_device, it must be checked if\nany of the mtk_eth net_devices is matching the netdev_ops of the ingress\ndevice."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/mediatek/mtk_ppe_offload.c"
                    ],
                    "versions": [
                        {
                            "version": "73cfd947dbdb25ef9863ac49c4596a7d53ad4025",
                            "lessThan": "0b832aad33e6f160fda310f0306a6483d85e9d6e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "73cfd947dbdb25ef9863ac49c4596a7d53ad4025",
                            "lessThan": "5dff799c677152dde963c3917bacd9127b03e145",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "73cfd947dbdb25ef9863ac49c4596a7d53ad4025",
                            "lessThan": "7b2380f0a0e374010c1a4a13203511b9dee5b166",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "73cfd947dbdb25ef9863ac49c4596a7d53ad4025",
                            "lessThan": "976ff48c2ac6e6b25b01428c9d7997bcd0fb2949",
                            "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/net/ethernet/mediatek/mtk_ppe_offload.c"
                    ],
                    "versions": [
                        {
                            "version": "6.11",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.11",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.81",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.22",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.12",
                            "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": "6.11",
                                    "versionEndExcluding": "6.12.81"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.11",
                                    "versionEndExcluding": "6.18.22"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.11",
                                    "versionEndExcluding": "6.19.12"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.11",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0b832aad33e6f160fda310f0306a6483d85e9d6e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5dff799c677152dde963c3917bacd9127b03e145"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7b2380f0a0e374010c1a4a13203511b9dee5b166"
                },
                {
                    "url": "https://git.kernel.org/stable/c/976ff48c2ac6e6b25b01428c9d7997bcd0fb2949"
                }
            ],
            "title": "net: ethernet: mtk_ppe: avoid NULL deref when gmac0 is disabled",
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                "engine": "bippy-1.2.0"
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        }
    }
}