{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-02T06:51:23.225","vulnerabilities":[{"cve":{"id":"CVE-2021-47112","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-03-15T21:15:06.627","lastModified":"2025-03-13T19:36:08.147","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/kvm: Teardown PV features on boot CPU as well\n\nVarious PV features (Async PF, PV EOI, steal time) work through memory\nshared with hypervisor and when we restore from hibernation we must\nproperly teardown all these features to make sure hypervisor doesn't\nwrite to stale locations after we jump to the previously hibernated kernel\n(which can try to place anything there). For secondary CPUs the job is\nalready done by kvm_cpu_down_prepare(), register syscore ops to do\nthe same for boot CPU."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: x86/kvm: Desmontaje de funciones PV también en la CPU de arranque Varias funciones PV (Async PF, PV EOI, tiempo de robo) funcionan a través de la memoria compartida con el hipervisor y cuando restauramos desde la hibernación Debemos eliminar adecuadamente todas estas características para asegurarnos de que el hipervisor no escriba en ubicaciones obsoletas después de saltar al kernel previamente hibernado (que puede intentar colocar cualquier cosa allí). Para las CPU secundarias, el trabajo ya lo realiza kvm_cpu_down_prepare(), registre syscore ops para hacer lo mismo para la CPU de arranque."}],"metrics":{"cvssMetricV31":[{"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:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-noinfo"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.4.125","matchCriteriaId":"F463D47B-F1A3-457B-87D0-92D3B3A033B0"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.43","matchCriteriaId":"B2136BD5-4F86-40C8-96C8-5C90A015490C"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.12.10","matchCriteriaId":"27384800-AB48-4C08-891E-34B66F5FC4AA"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*","matchCriteriaId":"0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/38b858da1c58ad46519a257764e059e663b59ff2","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/7620a669111b52f224d006dea9e1e688e2d62c54","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/8b79feffeca28c5459458fe78676b081e87c93a4","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/d1629b5b925de9b27979e929dae7fcb766daf6b6","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/38b858da1c58ad46519a257764e059e663b59ff2","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/7620a669111b52f224d006dea9e1e688e2d62c54","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/8b79feffeca28c5459458fe78676b081e87c93a4","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/d1629b5b925de9b27979e929dae7fcb766daf6b6","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}