{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-3715 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-3715 is a high-severity use after free vulnerability in Linux kernel, published on 2 Mar 2022. 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-2021-3715 and fix it if it is affected.\n\nWhat it is: CVE-2021-3715 is a high-severity use after free vulnerability in Linux kernel, published on 2 Mar 2022. 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-2021-3715 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-2021-3715/ (Markdown: https://insights.sbomify.com/CVE-2021-3715/index.md)","id":"CVE-2021-3715","markdown":"https://insights.sbomify.com/CVE-2021-3715/index.md","name":"CVE-2021-3715","record":{"aliases":["A-223966861","DEBIAN-CVE-2021-3715","GHSA-gcff-f9p7-hmfg","OESA-2021-1341","PUB-A-223966861","RHSA-2021:3438","RHSA-2021:3439","RHSA-2021:3441","UBUNTU-CVE-2021-3715"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["privilege_escalation","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"Unprivileged local users can escalate privileges via a use-after-free in the Linux kernel Traffic Control subsystem.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"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":"A flaw was found in the \"Routing decision\" classifier in the Linux kernel's Traffic Control networking subsystem in the way it handled changing of classification filters, leading to a use-after-free condition. This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.","ecosystems":["Red Hat:enterprise_linux:7::client","Red Hat:enterprise_linux:7::computenode","Red Hat:enterprise_linux:7::server","Red Hat:enterprise_linux:7::workstation","Red Hat:rhel_extras_rt:7"],"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":"Use after free in kernel","id":"CVE-2021-3715","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2021"},"n_packages":113,"n_references":1,"next":{"headline":"Other in nbdkit","id":"CVE-2021-3716"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:3.10.0-1160.42.2.el7"],"introduced":["0"],"last_affected":[],"package":"bpftool","purl":"pkg:rpm/redhat/bpftool","source":"RHSA-2021:3438"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:3.10.0-1160.42.2.el7"],"introduced":["0"],"last_affected":[],"package":"bpftool-debuginfo","purl":"pkg:rpm/redhat/bpftool-debuginfo","source":"RHSA-2021:3438"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:3.10.0-1160.42.2.el7"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/redhat/kernel","source":"RHSA-2021:3438"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:3.10.0-1160.42.2.el7"],"introduced":["0"],"last_affected":[],"package":"kernel-abi-whitelists","purl":"pkg:rpm/redhat/kernel-abi-whitelists","source":"RHSA-2021:3438"},{"ecosystem":"Red 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Hat:enterprise_linux:7::server","fixed":["0:3.10.0-1160.42.2.el7"],"introduced":["0"],"last_affected":[],"package":"kernel-debuginfo-common-ppc64","purl":"pkg:rpm/redhat/kernel-debuginfo-common-ppc64","source":"RHSA-2021:3438"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["0:3.10.0-1160.42.2.el7"],"introduced":["0"],"last_affected":[],"package":"kernel-debuginfo-common-ppc64le","purl":"pkg:rpm/redhat/kernel-debuginfo-common-ppc64le","source":"RHSA-2021:3438"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["0:3.10.0-1160.42.2.el7"],"introduced":["0"],"last_affected":[],"package":"kernel-debuginfo-common-s390x","purl":"pkg:rpm/redhat/kernel-debuginfo-common-s390x","source":"RHSA-2021:3438"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["0:3.10.0-1160.42.2.el7"],"introduced":["0"],"last_affected":[],"package":"kernel-debuginfo-common-x86_64","purl":"pkg:rpm/redhat/kernel-debuginfo-common-x86_64","source":"RHSA-2021:3438"}],"prev":{"headline":"Information disclosure in kernel","id":"CVE-2021-3714"},"products":["kernel"],"published":"2022-03-02","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":"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)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"Unprivileged local users can escalate privileges via a use-after-free in the Linux kernel Traffic Control subsystem.","url":"https://insights.sbomify.com/CVE-2021-3715/"}