{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-72337 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-72337 is an use after free 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-2026-72337 and fix it if it is affected.\n\nWhat it is: CVE-2026-72337 is an use after free 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-2026-72337 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-2026-72337/ (Markdown: https://insights.sbomify.com/CVE-2026-72337/index.md)","id":"CVE-2026-72337","markdown":"https://insights.sbomify.com/CVE-2026-72337/index.md","name":"CVE-2026-72337","record":{"aliases":["AZL-96453","BELL-CVE-2026-72337","DEBIAN-CVE-2026-72337","GHSA-f7wf-gfq3-cm8r","UBUNTU-CVE-2026-72337"],"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":"high_privilege","summary":"A race condition in the Linux kernel Bluetooth 6LoWPAN module allows local attackers to trigger a use-after-free, potentially leading to code execution or privilege escalation.","user_interaction":"not_required","vuln_class":"use_after_free"},"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\nBluetooth: 6lowpan: avoid untracked enable work\n\nlowpan_enable_set() allocates a temporary work item and schedules\ndo_enable_set() on system_wq, then returns to debugfs. The debugfs active\noperation has ended at that point, but the worker still executes module\ntext and manipulates enable_6lowpan and listen_chan.\n\nbt_6lowpan_exit() removes the debugfs files and immediately closes and\nputs listen_chan. It has no pointer to the queued work item, so it cannot\ncancel or flush it before tearing down the state that the worker uses.\n\nThe buggy scenario involves two paths, with each column showing the order\nwithin that path:\n\ndebugfs enable write              module exit\n1. lowpan_enable_set() allocates  1. bt_6lowpan_exit() removes\n   set_enable work                   the debugfs file\n2. schedule_work() queues         2. bt_6lowpan_exit() closes\n   do_enable_set()                   and puts listen_chan\n3. the write operation returns    3. module teardown can continue\n4. do_enable_set() later runs\n   against stale state\n\nRun the enable state transition synchronously in lowpan_enable_set()\ninstead. The simple debugfs setter can sleep, and this file already handles\nthe 6LoWPAN control write synchronously under the same set_lock. Once the\nsetter returns, debugfs removal covers the whole operation and exit can no\nlonger race with an untracked work item.\n\nValidation reproduced this kernel report:\nBUG: KASAN: slab-use-after-free in do_enable_set+0x113/0x2e0\nWorkqueue: events do_enable_set [bluetooth_6lowpan]\nThe buggy address belongs to the object at ffff888109cb8000","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: 6lowpan: avoid untracked enable work","id":"CVE-2026-72337","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"net/sched: act_pedit: fix TOCTOU heap OOB write in tc offload","id":"CVE-2026-72338"},"packages":[],"prev":{"headline":"Bluetooth: 6lowpan: hold L2CAP conn across debugfs control","id":"CVE-2026-72336"},"products":["Linux"],"published":"2026-08-15","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":"A race condition in the Linux kernel Bluetooth 6LoWPAN module allows local attackers to trigger a use-after-free, potentially leading to code execution or privilege escalation.","url":"https://insights.sbomify.com/CVE-2026-72337/"}