{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-74533 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-74533 is a high-severity vulnerability in Linux, published on 15 Aug 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-2026-74533 and fix it if it is affected.\n\nWhat it is: CVE-2026-74533 is a high-severity vulnerability in Linux, published on 15 Aug 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-2026-74533 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-2026-74533/ (Markdown: https://insights.sbomify.com/CVE-2026-74533/index.md)","id":"CVE-2026-74533","markdown":"https://insights.sbomify.com/CVE-2026-74533/index.md","name":"CVE-2026-74533","record":{"aliases":["BELL-CVE-2026-74533","DEBIAN-CVE-2026-74533","GHSA-xf88-xmxw-hhch","UBUNTU-CVE-2026-74533"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel Bluetooth","requires_auth":"none","summary":"A race condition in the Linux kernel Bluetooth ISO subsystem allows use-after-free, potentially enabling code execution or privilege escalation.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: fix race of kfree vs kref_get_unless_zero\n\nhci_conn::iso_data is accessed and modified without lock or RCU.\nThis leads to a race\n\n    [Task hdev-\u003eworkqueue]                 \t[Task 2]\n    iso_recv                                    iso_conn_put(conn)\n      conn = LOAD hcon-\u003eiso_data                  iso_conn_free(conn)\n      iso_conn_hold_unless_zero(conn)               hcon-\u003eiso_data = NULL\n                                                    kfree(conn)\n        kref_get_unless_zero(\u0026conn-\u003eref) /* UAF */\n\nand also to races in iso_conn_add() vs. iso_conn_free().\n\nFix by adding spinlock hci_conn::proto_lock and using it to guard\nhci_conn::iso_data.","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":"Bluetooth: ISO: fix race of kfree vs kref_get_unless_zero","id":"CVE-2026-74533","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"race_condition","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Bluetooth: ISO: fix refcounting of iso_conn","id":"CVE-2026-74534"},"packages":[],"prev":{"headline":"Bluetooth: btintel: Validate length before parsing diagnostics TLV","id":"CVE-2026-74532"},"products":["Linux"],"published":"2026-08-15","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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-21","vendors":["Linux"]},"summary":"A race condition in the Linux kernel Bluetooth ISO subsystem allows use-after-free, potentially enabling code execution or privilege escalation.","url":"https://insights.sbomify.com/CVE-2026-74533/"}