{"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": 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"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"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.6.152"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.12.104"}, {"vulnerable": true, "criteria": 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"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()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/openvswitch/flow.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "e85278afd4890dd190ba3c7a1b1a712b801c9fe1", "status": "affected", "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a", "versionType": "git"}, {"lessThan": "81f9b09f0ea3ba9ab966dd17e9f32625a14555e9", "status": "affected", "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a", "versionType": "git"}, {"lessThan": "831471718f6e19aed1a330b03b53190a90e06466", "status": "affected", "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a", "versionType": "git"}, {"lessThan": "d8bea341b183190ce6c055ab0e64ab78eb9a7290", "status": "affected", "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a", "versionType": "git"}, {"lessThan": "0b60b55652ba772b173dddc63f3851e1d2dd5927", "status": "affected", "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a", "versionType": "git"}, {"lessThan": "a8139285c8925efe59af28a9169bb2fda91bff15", "status": "affected", "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a", "versionType": "git"}, {"lessThan": "9b8cfbb58b85bfa7a78fac47fdc77396cd01f699", "status": "affected", "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a", "versionType": "git"}, {"lessThan": "cf6f8b29befb92173659bcef6a441d274947bfae", "status": "affected", "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/openvswitch/flow.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.10"}, {"lessThan": "4.10", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.265", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.152", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.104", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.45", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-74701", "lastModified": "2026-08-22T16:16:44.740", "metrics": {}, "published": "2026-08-22T16:16:44.740", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0b60b55652ba772b173dddc63f3851e1d2dd5927"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/81f9b09f0ea3ba9ab966dd17e9f32625a14555e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/831471718f6e19aed1a330b03b53190a90e06466"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9b8cfbb58b85bfa7a78fac47fdc77396cd01f699"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a8139285c8925efe59af28a9169bb2fda91bff15"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cf6f8b29befb92173659bcef6a441d274947bfae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d8bea341b183190ce6c055ab0e64ab78eb9a7290"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e85278afd4890dd190ba3c7a1b1a712b801c9fe1"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[217ac77a3c2524d999730b2a80b61fcc2d0f734a,e85278afd4890dd190ba3c7a1b1a712b801c9fe1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[217ac77a3c2524d999730b2a80b61fcc2d0f734a,81f9b09f0ea3ba9ab966dd17e9f32625a14555e9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[217ac77a3c2524d999730b2a80b61fcc2d0f734a,831471718f6e19aed1a330b03b53190a90e06466)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[217ac77a3c2524d999730b2a80b61fcc2d0f734a,d8bea341b183190ce6c055ab0e64ab78eb9a7290)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[217ac77a3c2524d999730b2a80b61fcc2d0f734a,0b60b55652ba772b173dddc63f3851e1d2dd5927)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[217ac77a3c2524d999730b2a80b61fcc2d0f734a,a8139285c8925efe59af28a9169bb2fda91bff15)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[217ac77a3c2524d999730b2a80b61fcc2d0f734a,9b8cfbb58b85bfa7a78fac47fdc77396cd01f699)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[217ac77a3c2524d999730b2a80b61fcc2d0f734a,cf6f8b29befb92173659bcef6a441d274947bfae)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.265,6.0.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.216,5.16.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.183,6.2.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.152,6.7.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.104,6.13.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.45,6.19.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.9,7.2.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-22T19:00:14.810490+00:00", "updated": "2026-08-22T21:15:03.177190+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-20", "CWE-125"]}