{"id":"CVE-2020-27821","state":"PUBLISHED","title":"A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table ","description":"A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.","publishedAt":"2020-12-08T21:33:02.000Z","updatedAt":"2024-08-04T16:25:42.445Z","severity":null,"assigner":"redhat","products":["n/a QEMU"],"affected":[{"vendor":"n/a","product":"QEMU","versions":[{"version":"prior to 5.2.0","status":"affected"}]}],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=1902651","http://www.openwall.com/lists/oss-security/2020/12/16/6","https://security.netapp.com/advisory/ntap-20210115-0006/","https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"],"weaknesses":["CWE-787"],"ingestedAt":"2026-10-29T19:47:11.046Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/27xxx/CVE-2020-27821.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2020-27821","state":"PUBLISHED","datePublished":"2020-12-08T21:33:02.000Z","dateUpdated":"2024-08-04T16:25:42.445Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2020-10-27T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0."}],"affected":[{"vendor":"n/a","product":"QEMU","versions":[{"version":"prior to 5.2.0","status":"affected"}]}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1902651","tags":["x_refsource_MISC"]},{"url":"http://www.openwall.com/lists/oss-security/2020/12/16/6","name":"[oss-security] 20201216 CVE-2020-27821 QEMU: heap buffer overflow in msix_table_mmio_write() in hw/pci/msix.c","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://security.netapp.com/advisory/ntap-20210115-0006/","tags":["x_refsource_CONFIRM"]},{"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-787","description":"CWE-787->CWE-122","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"redhat","dateUpdated":"2022-09-05T05:06:30.000Z","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"secalert@redhat.com","ID":"CVE-2020-27821","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"QEMU","version":{"version_data":[{"version_value":"prior to 5.2.0"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-787->CWE-122"}]}]},"references":{"reference_data":[{"name":"https://bugzilla.redhat.com/show_bug.cgi?id=1902651","refsource":"MISC","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1902651"},{"name":"[oss-security] 20201216 CVE-2020-27821 QEMU: heap buffer overflow in msix_table_mmio_write() in hw/pci/msix.c","refsource":"MLIST","url":"http://www.openwall.com/lists/oss-security/2020/12/16/6"},{"name":"https://security.netapp.com/advisory/ntap-20210115-0006/","refsource":"CONFIRM","url":"https://security.netapp.com/advisory/ntap-20210115-0006/"},{"name":"[debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update","refsource":"MLIST","url":"https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1902651","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2020/12/16/6","name":"[oss-security] 20201216 CVE-2020-27821 QEMU: heap buffer overflow in msix_table_mmio_write() in hw/pci/msix.c","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20210115-0006/","tags":["x_refsource_CONFIRM","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":"2024-08-04T16:25:42.445Z"}}]}}}