{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-33034 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-33034 is a high-severity use after free vulnerability in Debian Debian Linux, published on 14 May 2021. 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-2021-33034 and fix it if it is affected.\n\nWhat it is: CVE-2021-33034 is a high-severity use after free vulnerability in Debian Debian Linux, published on 14 May 2021. 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-2021-33034 in the wild and no public exploit code.\n\nAffected product: Debian Debian 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-2021-33034/ (Markdown: https://insights.sbomify.com/CVE-2021-33034/index.md)","id":"CVE-2021-33034","markdown":"https://insights.sbomify.com/CVE-2021-33034/index.md","name":"CVE-2021-33034","record":{"aliases":["A-194694600","AZL-6562","DEBIAN-CVE-2021-33034","GHSA-3qpw-8jg3-xjrh","PUB-A-194694600","RHSA-2021:2563","RHSA-2021:2668","UBUNTU-CVE-2021-33034"],"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":"low_privilege","summary":"A use-after-free in the Linux kernel Bluetooth subsystem allows attackers to write arbitrary values, 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":"mitre","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/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 before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value.","ecosystems":["Red Hat:enterprise_linux:8::baseos","Red Hat:rhel_eus:8.1::baseos"],"exploits":{"exploitdb":0,"first_seen":"2022-04-28","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2022-04-28T10:04:41Z","kind":"github_poc","ref":"https://github.com/Trinadh465/device_renesas_kernel_AOSP10_r33_CVE-2021-33034","stars":0,"title":null}],"tier":"poc_unverified"},"has_fix":true,"headline":"Use after free in n/a","id":"CVE-2021-33034","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora","linux:linux_kernel"],"type":"use_after_free","year":"2021"},"n_packages":30,"n_references":7,"next":{"headline":"Buffer overflow from a crafted DBF file","id":"CVE-2021-33035"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1-2.el8"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-305","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-305","source":"RHSA-2021:2563"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1-2.el8"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-305-debuginfo","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-305-debuginfo","source":"RHSA-2021:2563"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1-2.el8"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-305-debugsource","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-305-debugsource","source":"RHSA-2021:2563"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-305_3_1","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-305_3_1","source":"RHSA-2021:2563"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-305_3_1-debuginfo","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-305_3_1-debuginfo","source":"RHSA-2021:2563"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-305_3_1-debugsource","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-305_3_1-debugsource","source":"RHSA-2021:2563"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-10.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_24_2","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_24_2","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-10.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_24_2-debuginfo","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_24_2-debuginfo","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-10.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_24_2-debugsource","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_24_2-debugsource","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-10.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_27_1","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_27_1","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-10.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_27_1-debuginfo","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_27_1-debuginfo","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-10.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_27_1-debugsource","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_27_1-debugsource","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-8.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_32_1","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_32_1","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-8.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_32_1-debuginfo","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_32_1-debuginfo","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-8.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_32_1-debugsource","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_32_1-debugsource","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-8.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_34_1","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_34_1","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-8.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_34_1-debuginfo","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_34_1-debuginfo","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-8.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_34_1-debugsource","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_34_1-debugsource","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-7.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_38_1","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_38_1","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-7.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_38_1-debuginfo","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_38_1-debuginfo","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-7.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_38_1-debugsource","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_38_1-debugsource","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-5.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_43_1","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_43_1","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-5.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_43_1-debuginfo","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_43_1-debuginfo","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-5.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_43_1-debugsource","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_43_1-debugsource","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-4.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_44_1","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_44_1","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-4.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_44_1-debuginfo","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_44_1-debuginfo","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-4.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_44_1-debugsource","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_44_1-debugsource","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-1.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_48_1","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_48_1","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-1.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_48_1-debuginfo","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_48_1-debuginfo","source":"RHSA-2021:2668"},{"ecosystem":"Red Hat:rhel_eus:8.1::baseos","fixed":["0:1-1.el8_1"],"introduced":["0"],"last_affected":[],"package":"kpatch-patch-4_18_0-147_48_1-debugsource","purl":"pkg:rpm/redhat/kpatch-patch-4_18_0-147_48_1-debugsource","source":"RHSA-2021:2668"}],"prev":{"headline":"Use after free in n/a","id":"CVE-2021-33033"},"products":["n/a"],"published":"2021-05-14","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"A use-after-free in the Linux kernel Bluetooth subsystem allows attackers to write arbitrary values, potentially leading to code execution or privilege escalation.","url":"https://insights.sbomify.com/CVE-2021-33034/"}