{"id":"CVE-2026-72348","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-72348","generatedAt":"2026-10-28T08:37:09.426Z","title":"In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6tables: mark malformed IPv6 extension headers for hotdrop The ah, hbh and rt matches check that the fixed extension header is present, then use the header length field to…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ip6tables: mark malformed IPv6 extension headers for hotdrop\n\nThe ah, hbh and rt matches check that the fixed extension header is\npresent, then use the header length field to derive the advertised\nextension header length for matching.\n\nFor the ah match, add the missing advertised-length check. For hbh\nand rt, update the existing advertised-length checks. In all three\ncases, set hotdrop to true before returning false when the advertised\nextension header length exceeds the available skb data.\n\nReturning false treats the packet as a rule mismatch. Set hotdrop to\ntrue and drop malformed packets so they cannot bypass rules intended\nto drop packets with these IPv6 extension headers.","published":"2026-08-15T06:22:08.000Z","lastModified":"2026-10-16T19:17:25.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"cwe":[],"affected":[],"epss":{"score":0.00626,"percentile":0.49786,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.63%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/2fd89a50a9783eed8ed23866b11c8b3d8779a7a8","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3578b6d92a5b1e603ae6e8c8f5538a709f03aba4","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3d441be2b1c5e98167302fa1c7b61960a067b112","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/43ccc20b5a733226417832cf16ef45322e594990","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d5e39e5eb6b30bc4a3bb7aba54c293cf36a806c7","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f16d856b6af5fd0e7cb0b0212f70825b599ef72e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f775fcf384b06f35b612f78fa5601fee99eb6513","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fc416870100cf16d5b9495199355a679c3a02d48","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72348","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}