{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49776",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T07:17:33.805Z",
        "datePublished": "2025-05-01T14:09:12.572Z",
        "dateUpdated": "2026-05-11T19:06:33.701Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:06:33.701Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmacvlan: enforce a consistent minimal mtu\n\nmacvlan should enforce a minimal mtu of 68, even at link creation.\n\nThis patch avoids the current behavior (which could lead to crashes\nin ipv6 stack if the link is brought up)\n\n$ ip link add macvlan1 link eno1 mtu 8 type macvlan  # This should fail !\n$ ip link sh dev macvlan1\n5: macvlan1@eno1: <BROADCAST,MULTICAST> mtu 8 qdisc noop\n    state DOWN mode DEFAULT group default qlen 1000\n    link/ether 02:47:6c:24:74:82 brd ff:ff:ff:ff:ff:ff\n$ ip link set macvlan1 mtu 67\nError: mtu less than device minimum.\n$ ip link set macvlan1 mtu 68\n$ ip link set macvlan1 mtu 8\nError: mtu less than device minimum."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/macvlan.c"
                    ],
                    "versions": [
                        {
                            "version": "91572088e3fdbf4fe31cf397926d8b890fdb3237",
                            "lessThan": "d2fee7d121d189c6dc905b727d60e7043a6655bb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "91572088e3fdbf4fe31cf397926d8b890fdb3237",
                            "lessThan": "650137a7c0b2892df2e5b0bc112d7b09a78c93c8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "91572088e3fdbf4fe31cf397926d8b890fdb3237",
                            "lessThan": "a62aa84fe19eb24d083d600a074c009a0a66d4f3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "91572088e3fdbf4fe31cf397926d8b890fdb3237",
                            "lessThan": "e929ec98c0c3b10d9c07f3776df0c1a02d7a763e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "91572088e3fdbf4fe31cf397926d8b890fdb3237",
                            "lessThan": "e41cbf98df22d08402e65174d147cbb187fe1a33",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "91572088e3fdbf4fe31cf397926d8b890fdb3237",
                            "lessThan": "2b055c719d8f94c15ec9b7659978133030c6a353",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "91572088e3fdbf4fe31cf397926d8b890fdb3237",
                            "lessThan": "b64085b00044bdf3cd1c9825e9ef5b2e0feae91a",
                            "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/macvlan.c"
                    ],
                    "versions": [
                        {
                            "version": "4.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.10",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.300",
                            "lessThanOrEqual": "4.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.267",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.225",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.156",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.80",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.10",
                            "lessThanOrEqual": "6.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1",
                            "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": "4.10",
                                    "versionEndExcluding": "4.14.300"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.10",
                                    "versionEndExcluding": "4.19.267"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.10",
                                    "versionEndExcluding": "5.4.225"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.10",
                                    "versionEndExcluding": "5.10.156"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.10",
                                    "versionEndExcluding": "5.15.80"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.10",
                                    "versionEndExcluding": "6.0.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.10",
                                    "versionEndExcluding": "6.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d2fee7d121d189c6dc905b727d60e7043a6655bb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/650137a7c0b2892df2e5b0bc112d7b09a78c93c8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a62aa84fe19eb24d083d600a074c009a0a66d4f3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e929ec98c0c3b10d9c07f3776df0c1a02d7a763e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e41cbf98df22d08402e65174d147cbb187fe1a33"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2b055c719d8f94c15ec9b7659978133030c6a353"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b64085b00044bdf3cd1c9825e9ef5b2e0feae91a"
                }
            ],
            "title": "macvlan: enforce a consistent minimal mtu",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}