{"api_version":"1","generated_at":"2026-07-11T18:47:09+00:00","cve":"CVE-2026-53131","urls":{"html":"https://cve.report/CVE-2026-53131","api":"https://cve.report/api/cve/CVE-2026-53131.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53131","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53131"},"summary":{"title":"netfilter: require Ethernet MAC header before using eth_hdr()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: require Ethernet MAC header before using eth_hdr()\n\n`ip6t_eui64`, `xt_mac`, the `bitmap:ip,mac`, `hash:ip,mac`, and\n`hash:mac` ipset types, and `nf_log_syslog` access `eth_hdr(skb)`\nafter either assuming that the skb is associated with an Ethernet\ndevice or checking only that the `ETH_HLEN` bytes at\n`skb_mac_header(skb)` lie between `skb->head` and `skb->data`.\n\nMake these paths first verify that the skb is associated with an\nEthernet device, that the MAC header was set, and that it spans at\nleast a full Ethernet header before accessing `eth_hdr(skb)`.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-25 09:16:30","updated_at":"2026-07-06 15:24:25"},"problem_types":["NVD-CWE-noinfo"],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"9.4","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H","baseScore":9.4,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"9.4","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H","data":{"baseScore":9.4,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/4435888e1bf139d2bfe5911643d4217382136743","name":"https://git.kernel.org/stable/c/4435888e1bf139d2bfe5911643d4217382136743","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/367abcacc13a8e2e7624408b7f593bd1e60e49d9","name":"https://git.kernel.org/stable/c/367abcacc13a8e2e7624408b7f593bd1e60e49d9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5d634afb8b83b49de562792fd0d047416a43bd4d","name":"https://git.kernel.org/stable/c/5d634afb8b83b49de562792fd0d047416a43bd4d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/62443dc21114c0bbc476fa62973db89743f2f137","name":"https://git.kernel.org/stable/c/62443dc21114c0bbc476fa62973db89743f2f137","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/063f43361e884acd7300790e90194430275d0d0c","name":"https://git.kernel.org/stable/c/063f43361e884acd7300790e90194430275d0d0c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/726abf97566867f808fec9d8a408eb9698bd570a","name":"https://git.kernel.org/stable/c/726abf97566867f808fec9d8a408eb9698bd570a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cea435ea7e868ea6fdf039bc4f2090c1d829b556","name":"https://git.kernel.org/stable/c/cea435ea7e868ea6fdf039bc4f2090c1d829b556","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53131","name":"CVE 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require Ethernet MAC header before using eth_hdr()","CVE":"CVE-2026-53131","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53131","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: require Ethernet MAC header before using eth_hdr()\n\n`ip6t_eui64`, `xt_mac`, the `bitmap:ip,mac`, `hash:ip,mac`, and\n`hash:mac` ipset types, and `nf_log_syslog` access `eth_hdr(skb)`\nafter either assuming that the skb is associated with an Ethernet\ndevice or checking only that the `ETH_HLEN` bytes at\n`skb_mac_header(skb)` lie between `skb->head` and `skb->data`.\n\nMake these paths first verify that the skb is associated with an\nEthernet device, that the MAC header was set, and that it spans at\nleast a full Ethernet header before accessing `eth_hdr(skb)`.","Type":"Description","Title":"netfilter: require Ethernet MAC header before using eth_hdr()"}]}}}