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Change History

In the Linux kernel, the following vulnerability has been resolved:

kvm: LAPIC: Restore guard to prevent illegal APIC register access

Per the SDM, "any access that touches bytes 4 through 15 of an APIC
register may cause undefined behavior and must not be executed."
Worse, such an access in kvm_lapic_reg_read can result in a leak of
kernel stack contents. Prior to commit 01402cf81051 ("kvm: LAPIC:
write down valid APIC registers"), such an access was explicitly
disallowed. Restore the guard th

kernel.org https://git.kernel.org/stable/c/018685461a5b9a9a70e664ac77aef0d7415a3fd5 [No types assigned]

kernel.org https://git.kernel.org/stable/c/218bf772bddd221489c38dde6ef8e917131161f6 [No types assigned]

kernel.org https://git.kernel.org/stable/c/a2aff09807fbe4018c269d3773a629949058b210 [No types assigned]

kernel.org https://git.kernel.org/stable/c/bf99ea52970caeb4583bdba1192c1f9b53b12c84 [No types assigned]