{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40170 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40170 is a high-severity vulnerability in Linux, published on 12 Nov 2025. 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-2025-40170 and fix it if it is affected.\n\nWhat it is: CVE-2025-40170 is a high-severity vulnerability in Linux, published on 12 Nov 2025. 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-2025-40170 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-2025-40170/ (Markdown: https://insights.sbomify.com/CVE-2025-40170/index.md)","id":"CVE-2025-40170","markdown":"https://insights.sbomify.com/CVE-2025-40170/index.md","name":"CVE-2025-40170","record":{"aliases":["AZL-70022","BELL-CVE-2025-40170","DEBIAN-CVE-2025-40170","GHSA-3vr4-gx8q-4fgg","ROOT-OS-DEBIAN-11-CVE-2025-40170","ROOT-OS-DEBIAN-12-CVE-2025-40170","ROOT-OS-DEBIAN-13-CVE-2025-40170","ROOT-OS-UBUNTU-2204-CVE-2025-40170","ROOT-OS-UBUNTU-2404-CVE-2025-40170","UBUNTU-CVE-2025-40170"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel networking","requires_auth":"low_privilege","summary":"A race condition in Linux kernel networking allows attackers to cause a denial of service via improper RCU protection of device pointers.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/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\nnet: use dst_dev_rcu() in sk_setup_caps()\n\nUse RCU to protect accesses to dst-\u003edev from sk_setup_caps()\nand sk_dst_gso_max_size().\n\nAlso use dst_dev_rcu() in ip6_dst_mtu_maybe_forward(),\nand ip_dst_mtu_maybe_forward().\n\nip4_dst_hoplimit() can use dst_dev_net_rcu().","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":"net: use dst_dev_rcu() in sk_setup_caps()","id":"CVE-2025-40170","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"race_condition","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"nvmet-fc: move lsop put work to nvmet_fc_ls_req_op","id":"CVE-2025-40171"},"packages":[],"prev":{"headline":"bpf: Reject negative offsets for ALU ops","id":"CVE-2025-40169"},"products":["Linux"],"published":"2025-11-12","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-21","vendors":["Linux"]},"summary":"A race condition in Linux kernel networking allows attackers to cause a denial of service via improper RCU protection of device pointers.","url":"https://insights.sbomify.com/CVE-2025-40170/"}