CVE - CVE-2021-46977

CVE-ID
CVE-2021-46977	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Disable preemption when probing user return MSRs Disable preemption when probing a user return MSR via RDSMR/WRMSR. If the MSR holds a different value per logical CPU, the WRMSR could corrupt the host's value if KVM is preempted between the RDMSR and WRMSR, and then rescheduled on a different CPU. Opportunistically land the helper in common x86, SVM will use the helper in a future commit.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/31f29749ee970c251b3a7e5b914108425940d089 URL:https://git.kernel.org/stable/c/31f29749ee970c251b3a7e5b914108425940d089 MISC:https://git.kernel.org/stable/c/5104d7ffcf24749939bea7fdb5378d186473f890 URL:https://git.kernel.org/stable/c/5104d7ffcf24749939bea7fdb5378d186473f890 MISC:https://git.kernel.org/stable/c/5adcdeb57007ccf8ab7ac20bf787ffb6fafb1a94 URL:https://git.kernel.org/stable/c/5adcdeb57007ccf8ab7ac20bf787ffb6fafb1a94 MISC:https://git.kernel.org/stable/c/e3ea1895df719c4ef87862501bb10d95f4177bed URL:https://git.kernel.org/stable/c/e3ea1895df719c4ef87862501bb10d95f4177bed
Assigning CNA
kernel.org
Date Record Created
20240227	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240227)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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