{"answers":{"affected":"It affects 6 products.","exploited":"There is no known exploitation of CVE-2020-27786 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2020-27786 is a high-severity use after free vulnerability in Linux kernel, published on 11 Dec 2020. 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-2020-27786 and fix it if it is affected.\n\nWhat it is: CVE-2020-27786 is a high-severity use after free vulnerability in Linux kernel, published on 11 Dec 2020. 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-2020-27786 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-2020-27786/ (Markdown: https://insights.sbomify.com/CVE-2020-27786/index.md)","id":"CVE-2020-27786","markdown":"https://insights.sbomify.com/CVE-2020-27786/index.md","name":"CVE-2020-27786","record":{"aliases":["A-175769013","DEBIAN-CVE-2020-27786","GHSA-3mfq-6299-p3w3","PUB-A-175769013","UBUNTU-CVE-2020-27786"],"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 MIDI","requires_auth":"low_privilege","summary":"A local attacker with MIDI device permissions can trigger a use-after-free in the Linux kernel, potentially leading to privilege escalation or code execution.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"linux_kernel","vendor":"linux"},{"product":"cloud_backup","vendor":"netapp"},{"product":"solidfire_baseboard_management_controller","vendor":"netapp"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"enterprise_mrg","vendor":"redhat"},{"product":"openshift_container_platform","vendor":"redhat"}],"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 Linux kernel’s implementation of MIDI, where an attacker with a local account and the permissions to issue ioctl commands to midi devices could trigger a use-after-free issue. A write to this specific memory while freed and before use causes the flow of execution to change and possibly allow for memory corruption or privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2022-06-13","github_poc":4,"max_poc_stars":9,"metasploit":0,"nuclei":0,"refs":[{"date":"2022-06-13T08:04:19Z","kind":"github_poc","ref":"https://github.com/kiks7/CVE-2020-27786-Kernel-Exploit","stars":9,"title":"4.9 Kernel Exploit for CVE-2020-27786"},{"date":"2024-04-16T13:45:35Z","kind":"github_poc","ref":"https://github.com/ii4gsp/CVE-2020-27786","stars":5,"title":null},{"date":"2023-04-27T01:13:04Z","kind":"github_poc","ref":"https://github.com/elbiazo/CVE-2020-27786","stars":0,"title":null},{"date":"2023-06-08T10:01:33Z","kind":"github_poc","ref":"https://github.com/Trinadh465/linux-4.19.72_CVE-2020-27786","stars":0,"title":null}],"tier":"poc_unverified"},"has_fix":true,"headline":"Use after free in kernel","id":"CVE-2020-27786","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel","netapp:cloud_backup","redhat:enterprise_linux","redhat:enterprise_mrg","redhat:openshift_container_platform"],"type":"use_after_free","year":"2020"},"n_packages":0,"n_references":4,"next":{"headline":"Denial of service in upx","id":"CVE-2020-27787"},"packages":[],"prev":{"headline":"Use after free in kernel","id":"CVE-2020-27784"},"products":["kernel"],"published":"2020-12-11","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"A local attacker with MIDI device permissions can trigger a use-after-free in the Linux kernel, potentially leading to privilege escalation or code execution.","url":"https://insights.sbomify.com/CVE-2020-27786/"}