diff options
| author | Andrew Honig <ahonig@google.com> | 2015-11-18 14:50:23 -0800 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-04-13 17:14:29 -0400 |
| commit | 90352f3f473a29db1289ec31facc1ac18cc66e9e (patch) | |
| tree | 4a129ca37fc539b77d23af5e777b69da6222ea11 /security | |
| parent | ea44bf73d956729f3122bbed0661db7b18864277 (diff) | |
KVM: x86: Reload pit counters for all channels when restoring state
[ Upstream commit 0185604c2d82c560dab2f2933a18f797e74ab5a8 ]
Currently if userspace restores the pit counters with a count of 0
on channels 1 or 2 and the guest attempts to read the count on those
channels, then KVM will perform a mod of 0 and crash. This will ensure
that 0 values are converted to 65536 as per the spec.
This is CVE-2015-7513.
Signed-off-by: Andy Honig <ahonig@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions