CVE-2013-4531
cpreg_vmstate_indexes is a VARRAY_INT32. A negative value for
cpreg_vmstate_array_len will cause a buffer overflow.
VMSTATE_INT32_LE was supposed to protect against this
but doesn't because it doesn't validate that input is
non-negative.
Fix this macro to valide the value appropriately.
The only other user of VMSTATE_INT32_LE doesn't
ever use negative numbers so it doesn't care.
Reported-by: Anthony Liguori <anthony@codemonkey.ws>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Can be used to verify a required field exists or validate
state in some other way.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
move size offset and number of elements math out
to functions, to reduce code duplication.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This replaces DPRINTF macro with tracepoints.
This moves some messages from migration.c to savevm.c.
This adds tracepoint to signal about fileds failed to migrate.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Fix comparison of vmstate_info_int32_le so that it succeeds if loaded
value is (l)ess than or (e)qual
When the comparison succeeds, assign the value loaded
This is a change in behaviour but I think the original intent, since
the idea is to check if the version/size of the thing you're loading is
less than some limit, but you might well want to do something based on
the actual version/size in the file
Fix up comment and name text
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This will allow unit tests to be written for VMState code without
pulling dependencies from the savevm code.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
