{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-89693 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-89693 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-2026-89693 and fix it if it is affected.\n\nWhat it is: CVE-2026-89693 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-2026-89693 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-2026-89693/ (Markdown: https://insights.sbomify.com/CVE-2026-89693/index.md)","id":"CVE-2026-89693","markdown":"https://insights.sbomify.com/CVE-2026-89693/index.md","name":"CVE-2026-89693","record":{"aliases":["AZL-100163","BELL-CVE-2026-89693","DEBIAN-CVE-2026-89693","GHSA-hqc5-5f52-xmgw","UBUNTU-CVE-2026-89693"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel NFS","requires_auth":"low_privilege","summary":"An attacker can bypass ACL restrictions during file creation in the Linux kernel NFS server by exploiting unchecked return values.","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 nfsd4_acl_to_attr() return value in nfsd4_create()\n\nnfsd4_create() stores the return value of nfsd4_acl_to_attr() in\nstatus, but the switch(create-\u003ecr_type) block unconditionally\noverwrites it in every branch. ACL translation errors are silently\ndiscarded, and the CREATE proceeds without the requested ACL.\n\nAdd an early exit check after nfsd4_acl_to_attr(), matching the\npattern already used in nfsd4_setattr().\n\n[ cel: prefer NFS4ERR_BADTYPE over NFS4ERR_ATTRNOTSUPP ]","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 nfsd4_acl_to_attr() return value in nfsd4_create()","id":"CVE-2026-89693","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"nfsd: check client ownership when cancelling a copy-notify stateid","id":"CVE-2026-89694"},"packages":[],"prev":{"headline":"nfsd: clear CALLBACK_RUNNING on failed delegation recall queue","id":"CVE-2026-89692"},"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":"2026-10-21","vendors":["Linux"]},"summary":"An attacker can bypass ACL restrictions during file creation in the Linux kernel NFS server by exploiting unchecked return values.","url":"https://insights.sbomify.com/CVE-2026-89693/"}