{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-47061","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-29T22:33:44.294Z","datePublished":"2024-02-29T22:37:35.689Z","dateUpdated":"2025-05-04T12:41:01.255Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T12:41:01.255Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU\n\nIf allocating a new instance of an I/O bus fails when unregistering a\ndevice, wait to destroy the device until after all readers are guaranteed\nto see the new null bus.  Destroying devices before the bus is nullified\ncould lead to use-after-free since readers expect the devices on their\nreference of the bus to remain valid."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["virt/kvm/kvm_main.c"],"versions":[{"version":"f65886606c2d3b562716de030706dfe1bea4ed5e","lessThan":"03c6cccedd3913006744faa252a4da5145299343","status":"affected","versionType":"git"},{"version":"f65886606c2d3b562716de030706dfe1bea4ed5e","lessThan":"4e899ca848636b37e9ac124bc1723862a7d7d927","status":"affected","versionType":"git"},{"version":"f65886606c2d3b562716de030706dfe1bea4ed5e","lessThan":"30f46c6993731efb2a690c9197c0fd9ed425da2d","status":"affected","versionType":"git"},{"version":"f65886606c2d3b562716de030706dfe1bea4ed5e","lessThan":"2ee3757424be7c1cd1d0bbfa6db29a7edd82a250","status":"affected","versionType":"git"},{"version":"f0dfffce3f4ffd5f822568a4a6fb34c010e939d1","status":"affected","versionType":"git"},{"version":"840e124f89a5127e7eb97ebf377f4b8ca745c070","status":"affected","versionType":"git"},{"version":"40a023f681befd9b2862a3c16fb306a38b359ae5","status":"affected","versionType":"git"},{"version":"19184bd06f488af62924ff1747614a8cb284ad63","status":"affected","versionType":"git"},{"version":"41b2ea7a6a11e2b1a7f2c29e1675a709a6b2b98d","status":"affected","versionType":"git"},{"version":"68c125324b5e1d1d22805653735442923d896a1d","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["virt/kvm/kvm_main.c"],"versions":[{"version":"5.9","status":"affected"},{"version":"0","lessThan":"5.9","status":"unaffected","versionType":"semver"},{"version":"5.10.37","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.11.21","lessThanOrEqual":"5.11.*","status":"unaffected","versionType":"semver"},{"version":"5.12.4","lessThanOrEqual":"5.12.*","status":"unaffected","versionType":"semver"},{"version":"5.13","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"5.10.37"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"5.11.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"5.12.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"5.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4.238"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9.238"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14.200"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.148"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.66"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8.10"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da5145299343"},{"url":"https://git.kernel.org/stable/c/4e899ca848636b37e9ac124bc1723862a7d7d927"},{"url":"https://git.kernel.org/stable/c/30f46c6993731efb2a690c9197c0fd9ed425da2d"},{"url":"https://git.kernel.org/stable/c/2ee3757424be7c1cd1d0bbfa6db29a7edd82a250"}],"title":"KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T05:24:39.011Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/03c6cccedd3913006744faa252a4da5145299343","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/4e899ca848636b37e9ac124bc1723862a7d7d927","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/30f46c6993731efb2a690c9197c0fd9ed425da2d","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/2ee3757424be7c1cd1d0bbfa6db29a7edd82a250","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-08-08T18:46:02.297393Z","id":"CVE-2021-47061","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-08-08T18:46:13.135Z"}}]}}