CVE-2021-29657
Vulnerability from cvelistv5
Published
2021-07-22 16:44
Modified
2024-08-03 22:11
Severity ?
Summary
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.
References
cve@mitre.orghttp://packetstormsecurity.com/files/163324/KVM-nested_svm_vmrun-Double-Fetch.htmlThird Party Advisory, VDB Entry
cve@mitre.orghttps://bugs.chromium.org/p/project-zero/issues/detail?id=2177Exploit, Mailing List, Patch, Third Party Advisory
cve@mitre.orghttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.12Exploit, Patch, Vendor Advisory
cve@mitre.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a58d9166a756a0f4a6618e4f593232593d6df134Patch, Third Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20210902-0008/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/163324/KVM-nested_svm_vmrun-Double-Fetch.htmlThird Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://bugs.chromium.org/p/project-zero/issues/detail?id=2177Exploit, Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.12Exploit, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a58d9166a756a0f4a6618e4f593232593d6df134Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210902-0008/Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

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