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.
Vendor | Product | Version | CPE |
---|---|---|---|
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"arch/x86/include/asm/kvm_host.h",
"arch/x86/kvm/vmx/vmx.c",
"arch/x86/kvm/x86.c"
],
"versions": [
{
"version": "4be534102624",
"lessThan": "31f29749ee97",
"status": "affected",
"versionType": "git"
},
{
"version": "4be534102624",
"lessThan": "5adcdeb57007",
"status": "affected",
"versionType": "git"
},
{
"version": "4be534102624",
"lessThan": "e3ea1895df71",
"status": "affected",
"versionType": "git"
},
{
"version": "4be534102624",
"lessThan": "5104d7ffcf24",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"arch/x86/include/asm/kvm_host.h",
"arch/x86/kvm/vmx/vmx.c",
"arch/x86/kvm/x86.c"
],
"versions": [
{
"version": "5.5",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.5",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.10.38",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.11.22",
"lessThanOrEqual": "5.11.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.12.5",
"lessThanOrEqual": "5.12.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.13",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]