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Description: Linux kernel Power8 conflicting use of HSTATE_HOST_R1 vulnerability
References:
https://www.openwall.com/lists/oss-security/2020/04/06/2
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1867717
Notes:
carnil> Introduced by f024ee098476 ("KVM: PPC: Book3S HV: Pull out TM
carnil> state save/restore into separate procedures") in 4.8-rc1 and
carnil> 87a11bb6a7f7 ("KVM: PPC: Book3S HV: Work around XER[SO] bug in
carnil> fake suspend mode") in 4.17-rc1.
Bugs:
upstream: released (4.18-rc1) [6f597c6b63b6f3675914b5ec8fcd008a58678650, 7b0e827c6970e8ca77c60ae87592204c39e41245, 009c872a8bc4d38f487a9bd62423d019e4322517]
4.19-upstream-stable: N/A "Fixed before branching point"
4.9-upstream-stable: N/A "Vulnerable code not present"
3.16-upstream-stable: N/A "Vulnerable code not present"
sid: released (4.18.6-1)
4.19-buster-security: N/A "Vulnerable code not present"
4.9-stretch-security: N/A "Vulnerable code not present"
3.16-jessie-security: N/A "Vulnerable code not present"
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