CVE-2021-46977
- Source
- https://cve.org/CVERecord?id=CVE-2021-46977
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-46977.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-46977
- Downstream
- Published
- 2024-02-28T09:15:37.140Z
- Modified
- 2026-03-15T14:45:38.272561Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-46977.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "5.5"
},
{
"fixed": "5.10.38"
}
]
},
{
"events": [
{
"introduced": "5.11"
},
{
"fixed": "5.11.22"
}
]
},
{
"events": [
{
"introduced": "5.12"
},
{
"fixed": "5.12.5"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.13-rc1"
}
]
}
]