{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-98569 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-98569 is a denial of service vulnerability in Linux, published on 18 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-98569 and fix it if it is affected.\n\nWhat it is: CVE-2026-98569 is a denial of service vulnerability in Linux, published on 18 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-98569 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-2026-98569/ (Markdown: https://insights.sbomify.com/CVE-2026-98569/index.md)","id":"CVE-2026-98569","markdown":"https://insights.sbomify.com/CVE-2026-98569/index.md","name":"CVE-2026-98569","record":{"aliases":["AZL-109091","BELL-CVE-2026-98569","DEBIAN-CVE-2026-98569","GHSA-hr5p-wrg7-45pp","UBUNTU-CVE-2026-98569"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"high_privilege","summary":"A local attacker with high privileges can disrupt network metadata processing for GRE devices by improperly enabling collect metadata mode via changelink.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nip_gre: Reject enabling collect metadata through changelink\n\nipgre_netlink_parms() can enable collect_md on an existing GRE, GRETAP\nor ERSPAN device. Unlike newlink, changelink does not enforce metadata\ntunnel uniqueness. Converting a non-metadata device can therefore\nreplace the metadata receive entry for another device of the same type\nin the same netns. Deleting either device then clears the shared entry,\nbreaking metadata receive lookup for the surviving device.\n\nIf parameter validation fails after collect_md is set, deleting the\nmodified device can also clear an entry it never owned.\n\nReject enabling metadata mode in both changelink callbacks before any\nencapsulation or tunnel parameters are modified. Allow requests that\nrepeat the metadata attribute on an existing metadata device.","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":"ip_gre: Reject enabling collect metadata through changelink","id":"CVE-2026-98569","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"net: ipv6: keep room for the mac header in dst_dev_overhead()","id":"CVE-2026-98570"},"packages":[],"prev":{"headline":"vxlan: use one headroom snapshot for neighbour replies","id":"CVE-2026-98568"},"products":["Linux"],"published":"2026-10-18","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A local attacker with high privileges can disrupt network metadata processing for GRE devices by improperly enabling collect metadata mode via changelink.","url":"https://insights.sbomify.com/CVE-2026-98569/"}