{"answers":{"affected":"It affects 10 products.","exploited":"There is no known exploitation of CVE-2021-3930 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-3930 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 18 Feb 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-2021-3930 and fix it if it is affected.\n\nWhat it is: CVE-2021-3930 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 18 Feb 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-2021-3930 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-2021-3930/ (Markdown: https://insights.sbomify.com/CVE-2021-3930/index.md)","id":"CVE-2021-3930","markdown":"https://insights.sbomify.com/CVE-2021-3930/index.md","name":"CVE-2021-3930","record":{"aliases":["AZL-8671","DEBIAN-CVE-2021-3930","GHSA-2v9g-p8fq-vvh2","RHSA-2021:5065","UBUNTU-CVE-2021-3930"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"QEMU emulator","requires_auth":"low_privilege","summary":"A malicious guest can crash the QEMU emulator via an off-by-one error in SCSI device emulation, causing a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"qemu","vendor":"qemu"},{"product":"codeready_linux_builder","vendor":"redhat"},{"product":"codeready_linux_builder_for_ibm_z_systems","vendor":"redhat"},{"product":"codeready_linux_builder_for_power_little_endian","vendor":"redhat"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"enterprise_linux_advanced_virtualization_eus","vendor":"redhat"},{"product":"enterprise_linux_for_ibm_z_systems","vendor":"redhat"},{"product":"enterprise_linux_for_power_little_endian","vendor":"redhat"},{"product":"openstack","vendor":"redhat"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-193","name":"Off-by-one Error"}],"description":"An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.","ecosystems":["Red Hat:advanced_virtualization:8.4::el8"],"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":"Denial of service in QEMU","id":"CVE-2021-3930","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","qemu:qemu","redhat:enterprise_linux","redhat:enterprise_linux_for_ibm_z_systems","redhat:enterprise_linux_for_power_little_endian","redhat:openstack"],"type":"denial_of_service","year":"2021"},"n_packages":234,"n_references":5,"next":{"headline":"Cross-Site Request Forgery (CSRF) in snipe/snipe-it","id":"CVE-2021-3931"},"packages":[{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:20200717-1.gite18ddad8.module+el8.4.0+8855+a9e237a9"],"introduced":["0"],"last_affected":[],"package":"SLOF","purl":"pkg:rpm/redhat/SLOF","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.3.18-21.module+el8.4.0+11609+2eba841a"],"introduced":["0"],"last_affected":[],"package":"hivex","purl":"pkg:rpm/redhat/hivex","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.3.18-21.module+el8.4.0+11609+2eba841a"],"introduced":["0"],"last_affected":[],"package":"hivex-debuginfo","purl":"pkg:rpm/redhat/hivex-debuginfo","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.3.18-21.module+el8.4.0+11609+2eba841a"],"introduced":["0"],"last_affected":[],"package":"hivex-debugsource","purl":"pkg:rpm/redhat/hivex-debugsource","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.3.18-21.module+el8.4.0+11609+2eba841a"],"introduced":["0"],"last_affected":[],"package":"hivex-devel","purl":"pkg:rpm/redhat/hivex-devel","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs","purl":"pkg:rpm/redhat/libguestfs","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-bash-completion","purl":"pkg:rpm/redhat/libguestfs-bash-completion","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-debuginfo","purl":"pkg:rpm/redhat/libguestfs-debuginfo","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-debugsource","purl":"pkg:rpm/redhat/libguestfs-debugsource","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-devel","purl":"pkg:rpm/redhat/libguestfs-devel","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-gfs2","purl":"pkg:rpm/redhat/libguestfs-gfs2","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-gobject","purl":"pkg:rpm/redhat/libguestfs-gobject","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-gobject-debuginfo","purl":"pkg:rpm/redhat/libguestfs-gobject-debuginfo","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-gobject-devel","purl":"pkg:rpm/redhat/libguestfs-gobject-devel","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-inspect-icons","purl":"pkg:rpm/redhat/libguestfs-inspect-icons","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-java","purl":"pkg:rpm/redhat/libguestfs-java","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-java-debuginfo","purl":"pkg:rpm/redhat/libguestfs-java-debuginfo","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-java-devel","purl":"pkg:rpm/redhat/libguestfs-java-devel","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-javadoc","purl":"pkg:rpm/redhat/libguestfs-javadoc","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-man-pages-ja","purl":"pkg:rpm/redhat/libguestfs-man-pages-ja","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-man-pages-uk","purl":"pkg:rpm/redhat/libguestfs-man-pages-uk","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-rescue","purl":"pkg:rpm/redhat/libguestfs-rescue","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-rsync","purl":"pkg:rpm/redhat/libguestfs-rsync","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-tools","purl":"pkg:rpm/redhat/libguestfs-tools","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-tools-c","purl":"pkg:rpm/redhat/libguestfs-tools-c","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-tools-c-debuginfo","purl":"pkg:rpm/redhat/libguestfs-tools-c-debuginfo","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:8.2-2.module+el8.4.0+12717+0b0da9ad"],"introduced":["0"],"last_affected":[],"package":"libguestfs-winsupport","purl":"pkg:rpm/redhat/libguestfs-winsupport","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["1:1.44.0-2.module+el8.4.0+10146+75917d2f"],"introduced":["0"],"last_affected":[],"package":"libguestfs-xfs","purl":"pkg:rpm/redhat/libguestfs-xfs","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.18.0-8.module+el8.4.0+8855+a9e237a9"],"introduced":["0"],"last_affected":[],"package":"libiscsi","purl":"pkg:rpm/redhat/libiscsi","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.18.0-8.module+el8.4.0+8855+a9e237a9"],"introduced":["0"],"last_affected":[],"package":"libiscsi-debuginfo","purl":"pkg:rpm/redhat/libiscsi-debuginfo","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.18.0-8.module+el8.4.0+8855+a9e237a9"],"introduced":["0"],"last_affected":[],"package":"libiscsi-debugsource","purl":"pkg:rpm/redhat/libiscsi-debugsource","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.18.0-8.module+el8.4.0+8855+a9e237a9"],"introduced":["0"],"last_affected":[],"package":"libiscsi-devel","purl":"pkg:rpm/redhat/libiscsi-devel","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.18.0-8.module+el8.4.0+8855+a9e237a9"],"introduced":["0"],"last_affected":[],"package":"libiscsi-utils","purl":"pkg:rpm/redhat/libiscsi-utils","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.18.0-8.module+el8.4.0+8855+a9e237a9"],"introduced":["0"],"last_affected":[],"package":"libiscsi-utils-debuginfo","purl":"pkg:rpm/redhat/libiscsi-utils-debuginfo","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.6.0-3.module+el8.4.0+9856+bbc47853"],"introduced":["0"],"last_affected":[],"package":"libnbd","purl":"pkg:rpm/redhat/libnbd","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.6.0-3.module+el8.4.0+9856+bbc47853"],"introduced":["0"],"last_affected":[],"package":"libnbd-bash-completion","purl":"pkg:rpm/redhat/libnbd-bash-completion","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.6.0-3.module+el8.4.0+9856+bbc47853"],"introduced":["0"],"last_affected":[],"package":"libnbd-debuginfo","purl":"pkg:rpm/redhat/libnbd-debuginfo","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.6.0-3.module+el8.4.0+9856+bbc47853"],"introduced":["0"],"last_affected":[],"package":"libnbd-debugsource","purl":"pkg:rpm/redhat/libnbd-debugsource","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:1.6.0-3.module+el8.4.0+9856+bbc47853"],"introduced":["0"],"last_affected":[],"package":"libnbd-devel","purl":"pkg:rpm/redhat/libnbd-devel","source":"RHSA-2021:5065"},{"ecosystem":"Red Hat:advanced_virtualization:8.4::el8","fixed":["0:0.7.4-4.20201106git2452a24dab.module+el8.4.0+10596+32ba7df3"],"introduced":["0"],"last_affected":[],"package":"libtpms","purl":"pkg:rpm/redhat/libtpms","source":"RHSA-2021:5065"}],"prev":{"headline":"Use after free in QEMU","id":"CVE-2021-3929"},"products":["QEMU"],"published":"2022-02-18","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)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"A malicious guest can crash the QEMU emulator via an off-by-one error in SCSI device emulation, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2021-3930/"}