Description: KVM: cache incoherence issue in SEV API may lead to kernel crash
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=2038940
 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bb4ce2c65881a2b9bdcd384f54a260a12a89dd91
 https://bugzilla.suse.com/show_bug.cgi?id=1199509
Notes:
 carnil> Need to isolate the required commits from the merge which are
 carnil> relevant for the CVE.
Bugs:
upstream: released (5.18-rc4) [683412ccf61294d727ead4a73d97397396e69a6b]
5.10-upstream-stable: released (5.10.146) [a60babeb60ff276963d4756c7fd2e7bf242bb777]
4.19-upstream-stable: N/A "Vulnerable code not present"
4.9-upstream-stable: N/A "Vulnerable code not present"
sid: released (5.18.2-1)
5.10-bullseye-security: released (5.10.148-1)
4.19-buster-security: N/A "Vulnerable code not present"
4.9-stretch-security: N/A "Vulnerable code not present"