{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-20T00:59:34.840","vulnerabilities":[{"cve":{"id":"CVE-2021-46967","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-02-27T19:04:07.170","lastModified":"2024-12-06T17:55:35.723","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvhost-vdpa: fix vm_flags for virtqueue doorbell mapping\n\nThe virtqueue doorbell is usually implemented via registeres but we\ndon't provide the necessary vma->flags like VM_PFNMAP. This may cause\nseveral issues e.g when userspace tries to map the doorbell via vhost\nIOTLB, kernel may panic due to the page is not backed by page\nstructure. This patch fixes this by setting the necessary\nvm_flags. With this patch, try to map doorbell via IOTLB will fail\nwith bad address."},{"lang":"es","value":"En el kernel de Linux, se resolvió la siguiente vulnerabilidad: vhost-vdpa: corrige vm_flags para el mapeo del timbre virtqueue El timbre virtqueue generalmente se implementa a través de registros, pero no proporcionamos los vma->flags necesarios como VM_PFNMAP. Esto puede causar varios problemas, por ejemplo, cuando el espacio de usuario intenta asignar el timbre a través de vhost IOTLB, el kernel puede entrar en pánico debido a que la página no está respaldada por la estructura de la página. Este parche soluciona este problema configurando los vm_flags necesarios. Con este parche, intentar asignar el timbre a través de IOTLB fallará con una dirección incorrecta."}],"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:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.10.36","matchCriteriaId":"4A500519-BED3-4E94-A4DF-98098BF45173"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.11.20","matchCriteriaId":"EEC03413-9760-46D4-AC1D-EB084A1D4111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.12.3","matchCriteriaId":"F9D6B2DE-7E4A-4B3B-9AEE-3A2C5F23DA32"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/3a3e0fad16d40a2aa68ddf7eea4acdf48b22dd44","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3b8b6399666a29daa30b0bb3f5c9e3fc81c5a6a6","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/93dbbf20e3ffad14f04227a0b7105f6e6f0387ce","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/940230a5c31e2714722aee04c521a21f484b4df7","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3a3e0fad16d40a2aa68ddf7eea4acdf48b22dd44","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3b8b6399666a29daa30b0bb3f5c9e3fc81c5a6a6","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/93dbbf20e3ffad14f04227a0b7105f6e6f0387ce","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/940230a5c31e2714722aee04c521a21f484b4df7","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}