{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-74701",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-15T05:44:03.927Z",
        "datePublished": "2026-08-22T15:33:01.585Z",
        "dateUpdated": "2026-08-22T15:33:01.585Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-22T15:33:01.585Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/openvswitch: check Ethernet header length in key_extract()\n\nWhen a packet arrives on an ARPHRD_NONE device (e.g. TUN),\novs_flow_key_extract() trusts the user-provided skb->protocol field: if\nit is ETH_P_TEB, the packet is classified as MAC_PROTO_ETHERNET and\nkey_extract() is called without ensuring the skb has ETH_HLEN (14) bytes\nof linear data. key_extract() unconditionally pulls 2 * ETH_ALEN bytes\nfor MAC addresses and parse_ethertype() pulls 2 more, either of which\ntriggers a kernel BUG in __skb_pull() when the linear area is too small.\n\n  kernel BUG at include/linux/skbuff.h:2848!\n  RIP: 0010:key_extract+0xa7e/0xd90 net/openvswitch/flow.c:933\n  ovs_flow_key_extract+0x419/0xa70\n  ovs_vport_receive+0x222/0x390\n  netdev_frame_hook+0x3e0/0x630\n  tun_get_user+0x2d0c/0x38e0\n\nFixed by calling check_header() in key_extract() before accessing the\nEthernet header."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/openvswitch/flow.c"
                    ],
                    "versions": [
                        {
                            "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
                            "lessThan": "e85278afd4890dd190ba3c7a1b1a712b801c9fe1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
                            "lessThan": "81f9b09f0ea3ba9ab966dd17e9f32625a14555e9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
                            "lessThan": "831471718f6e19aed1a330b03b53190a90e06466",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
                            "lessThan": "d8bea341b183190ce6c055ab0e64ab78eb9a7290",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
                            "lessThan": "0b60b55652ba772b173dddc63f3851e1d2dd5927",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
                            "lessThan": "a8139285c8925efe59af28a9169bb2fda91bff15",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
                            "lessThan": "9b8cfbb58b85bfa7a78fac47fdc77396cd01f699",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
                            "lessThan": "cf6f8b29befb92173659bcef6a441d274947bfae",
                            "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/openvswitch/flow.c"
                    ],
                    "versions": [
                        {
                            "version": "4.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.10",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.265",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.216",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.152",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.104",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.45",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.9",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "5.10.265"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.10",
                                    "versionEndExcluding": "5.15.216"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.10",
                                    "versionEndExcluding": "7.2"
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e85278afd4890dd190ba3c7a1b1a712b801c9fe1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/81f9b09f0ea3ba9ab966dd17e9f32625a14555e9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/831471718f6e19aed1a330b03b53190a90e06466"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d8bea341b183190ce6c055ab0e64ab78eb9a7290"
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                    "url": "https://git.kernel.org/stable/c/0b60b55652ba772b173dddc63f3851e1d2dd5927"
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                    "url": "https://git.kernel.org/stable/c/a8139285c8925efe59af28a9169bb2fda91bff15"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9b8cfbb58b85bfa7a78fac47fdc77396cd01f699"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cf6f8b29befb92173659bcef6a441d274947bfae"
                }
            ],
            "title": "net/openvswitch: check Ethernet header length in key_extract()",
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}