{"containers":{"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"descriptions":[{"lang":"en","value":"arch/x86/kvm/svm/nested.c in the Linux kernel before 5.11.12 has a use-after-free in which an AMD KVM guest can bypass access control on host OS MSRs when there are nested guests, aka CID-a58d9166a756. This occurs because of a TOCTOU race condition associated with a VMCB12 double fetch in nested_svm_vmrun."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2021-09-02T08:06:31.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"tags":["x_refsource_MISC"],"url":"http://packetstormsecurity.com/files/163324/KVM-nested_svm_vmrun-Double-Fetch.html"},{"tags":["x_refsource_MISC"],"url":"https://bugs.chromium.org/p/project-zero/issues/detail?id=2177"},{"tags":["x_refsource_CONFIRM"],"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a58d9166a756a0f4a6618e4f593232593d6df134"},{"tags":["x_refsource_CONFIRM"],"url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.12"},{"tags":["x_refsource_CONFIRM"],"url":"https://security.netapp.com/advisory/ntap-20210902-0008/"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2021-29657","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"arch/x86/kvm/svm/nested.c in the Linux kernel before 5.11.12 has a use-after-free in which an AMD KVM guest can bypass access control on host OS MSRs when there are nested guests, aka CID-a58d9166a756. This occurs because of a TOCTOU race condition associated with a VMCB12 double fetch in nested_svm_vmrun."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"http://packetstormsecurity.com/files/163324/KVM-nested_svm_vmrun-Double-Fetch.html","refsource":"MISC","url":"http://packetstormsecurity.com/files/163324/KVM-nested_svm_vmrun-Double-Fetch.html"},{"name":"https://bugs.chromium.org/p/project-zero/issues/detail?id=2177","refsource":"MISC","url":"https://bugs.chromium.org/p/project-zero/issues/detail?id=2177"},{"name":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a58d9166a756a0f4a6618e4f593232593d6df134","refsource":"CONFIRM","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a58d9166a756a0f4a6618e4f593232593d6df134"},{"name":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.12","refsource":"CONFIRM","url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.12"},{"name":"https://security.netapp.com/advisory/ntap-20210902-0008/","refsource":"CONFIRM","url":"https://security.netapp.com/advisory/ntap-20210902-0008/"}]}}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T22:11:06.370Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"http://packetstormsecurity.com/files/163324/KVM-nested_svm_vmrun-Double-Fetch.html"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://bugs.chromium.org/p/project-zero/issues/detail?id=2177"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a58d9166a756a0f4a6618e4f593232593d6df134"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.12"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://security.netapp.com/advisory/ntap-20210902-0008/"}]}]},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2021-29657","datePublished":"2021-07-22T16:44:33.000Z","dateReserved":"2021-03-31T00:00:00.000Z","dateUpdated":"2024-08-03T22:11:06.370Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}