diff options
| author | Nadav Amit <[email protected]> | 2014-09-18 22:39:39 +0300 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2014-10-24 13:21:16 +0200 |
| commit | d1442d85cc30ea75f7d399474ca738e0bc96f715 (patch) | |
| tree | abee3c5d2d0c427e87d76299536e4af37a9a17dc /tools/perf/scripts/python/bin/export-to-postgresql-report | |
| parent | 234f3ce485d54017f15cf5e0699cff4100121601 (diff) | |
KVM: x86: Handle errors when RIP is set during far jumps
Far jmp/call/ret may fault while loading a new RIP. Currently KVM does not
handle this case, and may result in failed vm-entry once the assignment is
done. The tricky part of doing so is that loading the new CS affects the
VMCS/VMCB state, so if we fail during loading the new RIP, we are left in
unconsistent state. Therefore, this patch saves on 64-bit the old CS
descriptor and restores it if loading RIP failed.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/bin/export-to-postgresql-report')
0 files changed, 0 insertions, 0 deletions