{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-31679 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-31679 is a high-severity denial of service vulnerability in Linux kernel, published on 25 Apr 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-2026-31679 and fix it if it is affected.\n\nWhat it is: CVE-2026-31679 is a high-severity denial of service vulnerability in Linux kernel, published on 25 Apr 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-2026-31679 in the wild and no public exploit code.\n\nAffected product: Linux kernel. 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-2026-31679/ (Markdown: https://insights.sbomify.com/CVE-2026-31679/index.md)","id":"CVE-2026-31679","markdown":"https://insights.sbomify.com/CVE-2026-31679/index.md","name":"CVE-2026-31679","record":{"aliases":["AZL-84231","BELL-CVE-2026-31679","DEBIAN-CVE-2026-31679","GHSA-j5m6-467m-h4hw","ROOT-OS-DEBIAN-11-CVE-2026-31679","ROOT-OS-DEBIAN-12-CVE-2026-31679","ROOT-OS-UBUNTU-2204-CVE-2026-31679","ROOT-OS-UBUNTU-2404-CVE-2026-31679","UBUNTU-CVE-2026-31679"],"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":"low_privilege","summary":"A missing length validation in the Linux kernel's Open vSwitch MPLS handling allows attackers to cause a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nopenvswitch: validate MPLS set/set_masked payload length\n\nvalidate_set() accepted OVS_KEY_ATTR_MPLS as variable-sized payload for\nSET/SET_MASKED actions. In action handling, OVS expects fixed-size\nMPLS key data (struct ovs_key_mpls).\n\nUse the already normalized key_len (masked case included) and reject\nnon-matching MPLS action key sizes.\n\nReject invalid MPLS action payload lengths early.","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":"openvswitch: validate MPLS set/set_masked payload length","id":"CVE-2026-31679","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"net: ipv6: flowlabel: defer exclusive option free until RCU teardown","id":"CVE-2026-31680"},"packages":[],"prev":{"headline":"openvswitch: defer tunnel netdev_put to RCU release","id":"CVE-2026-31678"},"products":["Linux"],"published":"2026-04-25","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A missing length validation in the Linux kernel's Open vSwitch MPLS handling allows attackers to cause a denial of service.","url":"https://insights.sbomify.com/CVE-2026-31679/"}