{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-36013 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-36013 is a high-severity use after free vulnerability in Linux kernel, published on 23 May 2024. 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-2024-36013 and fix it if it is affected.\n\nWhat it is: CVE-2024-36013 is a high-severity use after free vulnerability in Linux kernel, published on 23 May 2024. 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-2024-36013 in the wild and no public exploit code.\n\nAffected product: Linux kernel. 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-2024-36013/ (Markdown: https://insights.sbomify.com/CVE-2024-36013/index.md)","id":"CVE-2024-36013","markdown":"https://insights.sbomify.com/CVE-2024-36013/index.md","name":"CVE-2024-36013","record":{"aliases":["BELL-CVE-2024-36013","DEBIAN-CVE-2024-36013","GHSA-f835-w392-m6qf","ROOT-OS-DEBIAN-11-CVE-2024-36013","ROOT-OS-DEBIAN-12-CVE-2024-36013","ROOT-OS-UBUNTU-2204-CVE-2024-36013","UBUNTU-CVE-2024-36013"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel Bluetooth","requires_auth":"none","summary":"A use-after-free flaw in the Linux kernel Bluetooth L2CAP subsystem allows attackers to cause denial of service or execute arbitrary code.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"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":[{"id":"CWE-416","name":"Use After Free"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix slab-use-after-free in l2cap_connect()\n\nExtend a critical section to prevent chan from early freeing.\nAlso make the l2cap_connect() return type void. Nothing is using the\nreturned value but it is ugly to return a potentially freed pointer.\nMaking it void will help with backports because earlier kernels did use\nthe return value. Now the compile will break for kernels where this\npatch is not a complete fix.\n\nCall stack summary:\n\n[use]\nl2cap_bredr_sig_cmd\n  l2cap_connect\n  ┌ mutex_lock(\u0026conn-\u003echan_lock);\n  │ chan = pchan-\u003eops-\u003enew_connection(pchan); \u003c- alloc chan\n  │ __l2cap_chan_add(conn, chan);\n  │   l2cap_chan_hold(chan);\n  │   list_add(\u0026chan-\u003elist, \u0026conn-\u003echan_l);   ... (1)\n  └ mutex_unlock(\u0026conn-\u003echan_lock);\n    chan-\u003econf_state              ... (4) \u003c- use after free\n\n[free]\nl2cap_conn_del\n┌ mutex_lock(\u0026conn-\u003echan_lock);\n│ foreach chan in conn-\u003echan_l:            ... (2)\n│   l2cap_chan_put(chan);\n│     l2cap_chan_destroy\n│       kfree(chan)               ... (3) \u003c- chan freed\n└ mutex_unlock(\u0026conn-\u003echan_lock);\n\n==================================================================\nBUG: KASAN: slab-use-after-free in instrument_atomic_read\ninclude/linux/instrumented.h:68 [inline]\nBUG: KASAN: slab-use-after-free in _test_bit\ninclude/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]\nBUG: KASAN: slab-use-after-free in l2cap_connect+0xa67/0x11a0\nnet/bluetooth/l2cap_core.c:4260\nRead of size 8 at addr ffff88810bf040a0 by task kworker/u3:1/311","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: L2CAP: Fix slab-use-after-free in l2cap_connect()","id":"CVE-2024-36013","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2024"},"n_packages":0,"n_references":4,"next":{"headline":"drm/arm/malidp: fix a possible null pointer dereference","id":"CVE-2024-36014"},"packages":[],"prev":{"headline":"Bluetooth: msft: fix slab-use-after-free in msft_do_close()","id":"CVE-2024-36012"},"products":["Linux"],"published":"2024-05-23","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-05","vendors":["Linux"]},"summary":"A use-after-free flaw in the Linux kernel Bluetooth L2CAP subsystem allows attackers to cause denial of service or execute arbitrary code.","url":"https://insights.sbomify.com/CVE-2024-36013/"}