{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93834 exists.","fix":"Apply the vendor's patch.","what":"CVE-2026-93834 is a high-severity use after free vulnerability in Red Hat Enterprise Linux 10, published on 25 Sep 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-2026-93834 and fix it if it is affected.\n\nWhat it is: CVE-2026-93834 is a high-severity use after free vulnerability in Red Hat Enterprise Linux 10, published on 25 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93834 exists.\n\nAffected product: Red Hat Enterprise Linux 10. 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-2026-93834/ (Markdown: https://insights.sbomify.com/CVE-2026-93834/index.md)","id":"CVE-2026-93834","markdown":"https://insights.sbomify.com/CVE-2026-93834/index.md","name":"CVE-2026-93834","record":{"aliases":["AZL-105278","DEBIAN-CVE-2026-93834","ECHO-cb4a-4db7-9170","GHSA-86c2-8qp8-q2vh","OESA-2026-4584","OESA-2026-4585","OESA-2026-4586","OESA-2026-4587","UBUNTU-CVE-2026-93834"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"QEMU virtualization","requires_auth":"low_privilege","summary":"A race condition in QEMU's 9pfs allows guest users to trigger a use-after-free, leading to VM escape and arbitrary host code execution.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-09-26","github_poc":1,"max_poc_stars":2,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-26T09:42:45Z","kind":"github_poc","ref":"https://github.com/suominen/CVE-2026-93834","stars":2,"title":"Tracking the QEMU CVE-2026-93834 9pfs fid-path use-after-free guest-to-host escape"}],"tier":"weaponised"},"has_fix":true,"headline":"Qemu-kvm: 9pfs: use-after-free race in tlcreate/twalk allows vm guest escape","id":"CVE-2026-93834","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"WPC Product Bundles for WooCommerce \u003c= 8.6.6 - Unauthenticated Stored Cross-Site Scripting via 'qty' Parameter","id":"CVE-2026-93836"},"packages":[],"prev":{"headline":"Missing authorization in Setup App","id":"CVE-2026-93832"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9","Red Hat Enterprise Linux for NVIDIA 26","Red Hat OpenShift Container Platform 4","Red Hat OpenStack Platform 13 (Queens)"],"published":"2026-09-25","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-25","vendors":["Red Hat"]},"summary":"A race condition in QEMU's 9pfs allows guest users to trigger a use-after-free, leading to VM escape and arbitrary host code execution.","url":"https://insights.sbomify.com/CVE-2026-93834/"}