{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-93786 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-93786 is a high-severity vulnerability in Linux, published on 24 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-2026-93786 and fix it if it is affected.\n\nWhat it is: CVE-2026-93786 is a high-severity vulnerability in Linux, published on 24 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-2026-93786 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-2026-93786/ (Markdown: https://insights.sbomify.com/CVE-2026-93786/index.md)","id":"CVE-2026-93786","markdown":"https://insights.sbomify.com/CVE-2026-93786/index.md","name":"CVE-2026-93786","record":{"aliases":["AZL-103878","BELL-CVE-2026-93786","DEBIAN-CVE-2026-93786","GHSA-h69q-mp6v-qjfh","UBUNTU-CVE-2026-93786"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel SMB server","requires_auth":"low_privilege","summary":"An attacker can widen effective permissions on SMB objects by exploiting incorrect POSIX ACL mask handling in the Linux kernel ksmbd module.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: preserve VFS inherited POSIX ACL mask\n\nThe VFS initializes a child's POSIX ACL from the parent's default ACL and\nthe requested creation mode. Do not mutate the parent ACL or overwrite the\nchild's VFS-computed access and default ACLs afterwards.\n\nThis preserves restrictive ACL_MASK entries and prevents SMB object creation\nfrom widening effective permissions.","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":"ksmbd: preserve VFS inherited POSIX ACL mask","id":"CVE-2026-93786","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"privilege_escalation","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"smb: client: bound dirent name against end of SMB response in cifs_filldir","id":"CVE-2026-93787"},"packages":[],"prev":{"headline":"cifs: validate idmap key payload length","id":"CVE-2026-93785"},"products":["Linux"],"published":"2026-09-24","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-03","vendors":["Linux"]},"summary":"An attacker can widen effective permissions on SMB objects by exploiting incorrect POSIX ACL mask handling in the Linux kernel ksmbd module.","url":"https://insights.sbomify.com/CVE-2026-93786/"}