{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-89694 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-89694 is a missing authorization vulnerability in Linux, published on 11 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-89694 and fix it if it is affected.\n\nWhat it is: CVE-2026-89694 is a missing authorization vulnerability in Linux, published on 11 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-89694 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-2026-89694/ (Markdown: https://insights.sbomify.com/CVE-2026-89694/index.md)","id":"CVE-2026-89694","markdown":"https://insights.sbomify.com/CVE-2026-89694/index.md","name":"CVE-2026-89694","record":{"aliases":["AZL-100175","BELL-CVE-2026-89694","DEBIAN-CVE-2026-89694","GHSA-79r3-v437-qvqg","UBUNTU-CVE-2026-89694"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel NFS","requires_auth":"low_privilege","summary":"An authenticated NFSv4.2 client can cancel another client's copy-notify stateid due to missing ownership checks, causing denial of service or data modification.","user_interaction":"not_required","vuln_class":"missing_authorization"},"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\nnfsd: check client ownership when cancelling a copy-notify stateid\n\nOn the OFFLOAD_CANCEL path (clp != NULL), manage_cpntf_state() freed the\ntarget cpntf state without checking ownership. The lookup key\nst-\u003esi_opaque.so_id is allocated cyclically (guessable) and the embedded\nclientid is the fixed per-net nn-\u003es2s_cp_cl_id, so any authenticated\nNFSv4.2 client could cancel and free another client's copy-notify\nstateid.\n\nCompare the creating clientid recorded in state-\u003ecp_p_clid against the\nrequesting client's cl_clientid and return nfserr_bad_stateid on a\nmismatch instead of freeing the entry.","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":"nfsd: check client ownership when cancelling a copy-notify stateid","id":"CVE-2026-89694","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"nfsd: cap decoded POSIX ACL count to bound sort cost","id":"CVE-2026-89695"},"packages":[],"prev":{"headline":"nfsd: check nfsd4_acl_to_attr() return value in nfsd4_create()","id":"CVE-2026-89693"},"products":["Linux"],"published":"2026-09-11","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":"An authenticated NFSv4.2 client can cancel another client's copy-notify stateid due to missing ownership checks, causing denial of service or data modification.","url":"https://insights.sbomify.com/CVE-2026-89694/"}