{"id":"CVE-2021-3501","state":"PUBLISHED","title":"A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at an","description":"A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.","publishedAt":"2021-05-05T22:31:28.000Z","updatedAt":"2026-08-05T21:23:05.440Z","severity":null,"assigner":"redhat","products":["Linux kernel"],"affected":[{"vendor":"Linux","product":"kernel","packageName":"kernel","defaultStatus":"unaffected","versions":[{"version":"5.9","status":"affected","lessThan":"5.10.32","versionType":"semver"},{"version":"5.11","status":"affected","lessThan":"5.11.16","versionType":"semver"}],"collectionURL":"https://git.kernel.org/pub/scm/linux/kernel"}],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=1950136","https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a","https://security.netapp.com/advisory/ntap-20210618-0008/"],"weaknesses":["CWE-787"],"ingestedAt":"2026-10-29T19:48:55.807Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/3xxx/CVE-2021-3501.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-3501","state":"PUBLISHED","datePublished":"2021-05-05T22:31:28.000Z","dateUpdated":"2026-08-05T21:23:05.440Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2021-04-15T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability."}],"affected":[{"vendor":"Linux","product":"kernel","packageName":"kernel","defaultStatus":"unaffected","versions":[{"version":"5.9","status":"affected","lessThan":"5.10.32","versionType":"semver"},{"version":"5.11","status":"affected","lessThan":"5.11.16","versionType":"semver"}],"collectionURL":"https://git.kernel.org/pub/scm/linux/kernel"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1950136","tags":["x_refsource_MISC"]},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a","tags":["x_refsource_MISC"]},{"url":"https://security.netapp.com/advisory/ntap-20210618-0008/","tags":["x_refsource_CONFIRM"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","description":"CWE-787","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"redhat","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateUpdated":"2026-08-05T21:23:05.440Z"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"secalert@redhat.com","ID":"CVE-2021-3501","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"kernel","version":{"version_data":[{"version_value":"Linux kernel 5.12"}]}}]},"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 Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-787"}]}]},"references":{"reference_data":[{"name":"https://bugzilla.redhat.com/show_bug.cgi?id=1950136","refsource":"MISC","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1950136"},{"name":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a","refsource":"MISC","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a"},{"name":"https://security.netapp.com/advisory/ntap-20210618-0008/","refsource":"CONFIRM","url":"https://security.netapp.com/advisory/ntap-20210618-0008/"}]}},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1950136","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20210618-0008/","tags":["x_refsource_CONFIRM","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T16:53:17.850Z"}}]}}}