Description
In the Linux kernel, the following vulnerability has been resolved: x86/kvm: Teardown PV features on boot CPU as well Various PV features (Async PF, PV EOI, steal time) work through memory shared with hypervisor and when we restore from hibernation we must properly teardown all these features to make sure hypervisor doesn't write to stale locations after we jump to the previously hibernated kernel (which can try to place anything there). For secondary CPUs the job is already done by kvm_cpu_down_prepare(), register syscore ops to do the same for boot CPU.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
fd10cde9294f73eeccbc16f3fec1ae6cde7b800c to < 7620a669111b52f224d006dea9e1e688e2d62c54affectedfd10cde9294f73eeccbc16f3fec1ae6cde7b800c to < 38b858da1c58ad46519a257764e059e663b59ff2affectedfd10cde9294f73eeccbc16f3fec1ae6cde7b800c to < d1629b5b925de9b27979e929dae7fcb766daf6b6affectedfd10cde9294f73eeccbc16f3fec1ae6cde7b800c to < 8b79feffeca28c5459458fe78676b081e87c93a4affected
Linux Linux
Default version status: affected
2.6.38affected0 to < 2.6.38unaffected5.4.125 to ≤ 5.4.*unaffected5.10.43 to ≤ 5.10.*unaffected5.12.10 to ≤ 5.12.*unaffected5.13 to ≤ *unaffected