{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-09T09:23:37.499","vulnerabilities":[{"cve":{"id":"CVE-2021-3750","sourceIdentifier":"secalert@redhat.com","published":"2022-05-02T19:15:08.343","lastModified":"2024-11-21T06:22:20.063","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A DMA reentrancy issue was found in the USB EHCI controller emulation of QEMU. EHCI does not verify if the Buffer Pointer overlaps with its MMIO region when it transfers the USB packets. Crafted content may be written to the controller's registers and trigger undesirable actions (such as reset) while the device is still transferring packets. This can ultimately lead to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code within the context of the QEMU process on the host. This flaw affects QEMU versions before 7.0.0."},{"lang":"es","value":"Se ha encontrado un problema de reentrada DMA en la emulación del controlador USB EHCI de QEMU. EHCI no verifica si el puntero del búfer es solapado con su región MMIO cuando transfiere los paquetes USB. El contenido diseñado puede escribirse en los registros del controlador y desencadenar acciones no deseadas (como el reinicio) mientras el dispositivo sigue transfiriendo paquetes. Esto puede conllevar en última instancia a un problema de uso de memoria previamente liberada. Un huésped malicioso podría usar este fallo para bloquear el proceso de QEMU en el host, resultando en una condición de denegación de servicio, o potencialmente ejecutar código arbitrario dentro del contexto del proceso de QEMU en el host. Este fallo afecta a QEMU versiones anteriores a 7.0.0"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","baseScore":8.2,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.5,"impactScore":6.0}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:P/I:P/A:P","baseScore":4.6,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":3.9,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"secalert@redhat.com","type":"Secondary","description":[{"lang":"en","value":"CWE-416"}]},{"source":"nvd@nist.gov","type":"Secondary","description":[{"lang":"en","value":"CWE-416"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.0","matchCriteriaId":"9D977C76-0598-40D0-BF46-0D987515764C"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*","matchCriteriaId":"053C1B35-3869-41C2-9551-044182DE0A64"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*","matchCriteriaId":"3AA08768-75AF-4791-B229-AE938C780959"}]}]}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1999073","source":"secalert@redhat.com","tags":["Issue Tracking","Third Party Advisory"]},{"url":"https://gitlab.com/qemu-project/qemu/-/issues/541","source":"secalert@redhat.com","tags":["Exploit","Third Party Advisory"]},{"url":"https://gitlab.com/qemu-project/qemu/-/issues/556","source":"secalert@redhat.com","tags":["Third Party Advisory"]},{"url":"https://security.gentoo.org/glsa/202208-27","source":"secalert@redhat.com","tags":["Third Party Advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20220624-0003/","source":"secalert@redhat.com","tags":["Third Party Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1999073","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Third Party Advisory"]},{"url":"https://gitlab.com/qemu-project/qemu/-/issues/541","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"]},{"url":"https://gitlab.com/qemu-project/qemu/-/issues/556","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://security.gentoo.org/glsa/202208-27","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20220624-0003/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}]}