{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-31572 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-31572 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-31572 is a critical vulnerability in n/a, published on 22 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-31572 and fix it if it is affected.\n\nWhat it is: CVE-2021-31572 is a critical vulnerability in n/a, published on 22 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-31572 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2021-31572/ (Markdown: https://insights.sbomify.com/CVE-2021-31572/index.md)","id":"CVE-2021-31572","markdown":"https://insights.sbomify.com/CVE-2021-31572/index.md","name":"CVE-2021-31572","record":{"aliases":["GHSA-rc5m-cw2g-xxwh"],"analysis":{"component_type":"operating_system","fix_type":"upgrade","impacts":["denial_of_service","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"FreeRTOS kernel","requires_auth":"none","summary":"An integer overflow in the FreeRTOS kernel stream buffer allows attackers to cause denial of service or potentially execute code.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"freertos","vendor":"amazon"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"The kernel in Amazon Web Services FreeRTOS before 10.4.3 has an integer overflow in stream_buffer.c for a stream buffer.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Integer overflow in n/a","id":"CVE-2021-31572","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Command injection in EN7528, EN7580","id":"CVE-2021-31573"},"packages":[],"prev":{"headline":"Integer overflow in n/a","id":"CVE-2021-31571"},"products":["n/a"],"published":"2021-04-22","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2021-32020","kev_date_added":null,"published":"2021-05-03"},{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2021-31571","kev_date_added":null,"published":"2021-04-22"},{"cvss_score":9.3,"headline":"Improper input validation in FreeRTOS-Kernel timer command handling","id":"CVE-2026-77234","kev_date_added":null,"published":"2026-08-21"},{"cvss_score":8.8,"headline":"Privilege Escalation in FreeRTOS Kernel ARMv7-M MPU ports and ARMv8-M ports with MPU support enabled","id":"CVE-2024-28115","kev_date_added":null,"published":"2024-03-07"},{"cvss_score":8.3,"headline":"Missing privilege check in SecureContext_FreeContext in FreeRTOS-Kernel","id":"CVE-2026-77235","kev_date_added":null,"published":"2026-08-21"},{"cvss_score":8.3,"headline":"Missing size validation in SecureContext_AllocateContext in FreeRTOS-Kernel","id":"CVE-2026-77236","kev_date_added":null,"published":"2026-08-21"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"An integer overflow in the FreeRTOS kernel stream buffer allows attackers to cause denial of service or potentially execute code.","url":"https://insights.sbomify.com/CVE-2021-31572/"}