{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-17T20:32:11.369","vulnerabilities":[{"cve":{"id":"CVE-2021-32846","sourceIdentifier":"security-advisories@github.com","published":"2023-02-17T23:15:12.037","lastModified":"2024-11-21T06:07:52.353","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107, function `pci_vtsock_proc_tx` in `virtio-sock` can lead to to uninitialized memory use. In this situation, there is a check for the return value to be less or equal to `VTSOCK_MAXSEGS`, but that check is not sufficient because the function can return `-1` if it finds an error it cannot recover from. Moreover, the negative return value will be used by `iovec_pull` in a while condition that can further lead to more corruption because the function is not designed to handle a negative `iov_len`. This issue may lead to a guest crashing the host causing a denial of service and, under certain circumstance, memory corruption. This issue is fixed in commit af5eba2360a7351c08dfd9767d9be863a50ebaba."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.5,"impactScore":5.2},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-908"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-754"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:mobyproject:hyperkit:*:*:*:*:*:*:*:*","versionEndIncluding":"0.20210107","matchCriteriaId":"0AE32831-24E2-44FD-939C-E6F799A5D632"}]}]}],"references":[{"url":"https://github.com/moby/hyperkit/commit/af5eba2360a7351c08dfd9767d9be863a50ebaba","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/moby/hyperkit/pull/313","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/","source":"security-advisories@github.com","tags":["Third Party Advisory"]},{"url":"https://github.com/moby/hyperkit/commit/af5eba2360a7351c08dfd9767d9be863a50ebaba","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://github.com/moby/hyperkit/pull/313","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}]}