{"id":"CVE-2021-20196","state":"PUBLISHED","title":"A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not ini","description":"A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.","publishedAt":"2021-05-26T21:16:58.000Z","updatedAt":"2024-08-03T17:30:07.781Z","severity":null,"assigner":"redhat","products":["n/a qemu"],"affected":[{"vendor":"n/a","product":"qemu","versions":[{"version":"vulnerable up to (including) qemu 5.2.0","status":"affected"}]}],"references":["https://bugs.launchpad.net/qemu/+bug/1912780","https://www.openwall.com/lists/oss-security/2021/01/28/1","https://security.netapp.com/advisory/ntap-20210708-0004/","https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html","https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T19:47:55.610Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/20xxx/CVE-2021-20196.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-20196","state":"PUBLISHED","datePublished":"2021-05-26T21:16:58.000Z","dateUpdated":"2024-08-03T17:30:07.781Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2020-12-17T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability."}],"affected":[{"vendor":"n/a","product":"qemu","versions":[{"version":"vulnerable up to (including) qemu 5.2.0","status":"affected"}]}],"references":[{"url":"https://bugs.launchpad.net/qemu/+bug/1912780","tags":["x_refsource_MISC"]},{"url":"https://www.openwall.com/lists/oss-security/2021/01/28/1","tags":["x_refsource_MISC"]},{"url":"https://security.netapp.com/advisory/ntap-20210708-0004/","tags":["x_refsource_CONFIRM"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html","name":"[debian-lts-announce] 20220404 [SECURITY] [DLA 2970-1] qemu security update","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html","name":"[debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update","tags":["mailing-list","x_refsource_MLIST"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","description":"CWE-476","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"redhat","dateUpdated":"2022-09-05T05:06:36.000Z","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://bugs.launchpad.net/qemu/+bug/1912780","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://www.openwall.com/lists/oss-security/2021/01/28/1","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20210708-0004/","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html","name":"[debian-lts-announce] 20220404 [SECURITY] [DLA 2970-1] qemu security update","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html","name":"[debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update","tags":["mailing-list","x_refsource_MLIST","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T17:30:07.781Z"}}]}}}