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CVE-2021-46977 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/31f29749ee970c251b3a7e5b914108425940d089
https://git.kernel.org/stable/c/31f29749ee970c251b3a7e5b914108425940d089
https://git.kernel.org/stable/c/5104d7ffcf24749939bea7fdb5378d186473f890
https://git.kernel.org/stable/c/5104d7ffcf24749939bea7fdb5378d186473f890
https://git.kernel.org/stable/c/5adcdeb57007ccf8ab7ac20bf787ffb6fafb1a94
https://git.kernel.org/stable/c/5adcdeb57007ccf8ab7ac20bf787ffb6fafb1a94
https://git.kernel.org/stable/c/e3ea1895df719c4ef87862501bb10d95f4177bed
https://git.kernel.org/stable/c/e3ea1895df719c4ef87862501bb10d95f4177bed

Weakness Enumeration

CWE-ID CWE Name Source

Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-46977
NVD Published Date:
02/28/2024
NVD Last Modified:
11/21/2024
Source:
kernel.org