{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-72417 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-72417 is a critical memory corruption vulnerability in Linux, published on 15 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-72417 and fix it if it is affected.\n\nWhat it is: CVE-2026-72417 is a critical memory corruption vulnerability in Linux, published on 15 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-72417 in the wild and no public exploit code.\n\nAffected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-72417/ (Markdown: https://insights.sbomify.com/CVE-2026-72417/index.md)","id":"CVE-2026-72417","markdown":"https://insights.sbomify.com/CVE-2026-72417/index.md","name":"CVE-2026-72417","record":{"aliases":["DEBIAN-CVE-2026-72417","GHSA-qcmg-5w5p-j7v4","UBUNTU-CVE-2026-72417"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A missing validation of IP header length in the Linux kernel netfilter flowtable allows out-of-bounds access, potentially leading to crashes or code execution.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: flowtable: Validate iph-\u003eihl in nf_flow_ip4_tunnel_proto()\n\nAdd sanity check for iph-\u003eihl field in nf_flow_ip4_tunnel_proto() before\nusing it to compute the header size, avoiding out-of-bounds access with\nmalformed IP headers.\nWhile at it, use iph-\u003eprotocol instead of the hardcoded IPPROTO_IPIP\nconstant when setting ctx-\u003etun.proto and reference ctx-\u003etun.hdr_size\nwhen updating ctx-\u003eoffset.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"netfilter: flowtable: Validate iph-\u003eihl in nf_flow_ip4_tunnel_proto()","id":"CVE-2026-72417","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"netfilter: nf_conncount: prevent connlimit drops for early confirmed ct","id":"CVE-2026-72418"},"packages":[],"prev":{"headline":"netfilter: nft_compat: ebtables emulation must reject non-bridge targets","id":"CVE-2026-72416"},"products":["Linux"],"published":"2026-08-15","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-08-17","vendors":["Linux"]},"summary":"A missing validation of IP header length in the Linux kernel netfilter flowtable allows out-of-bounds access, potentially leading to crashes or code execution.","url":"https://insights.sbomify.com/CVE-2026-72417/"}