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tpm2: Initialize a whole OBJECT before using it

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Initialize a whole OBJECT before using it. This is necessary since
an OBJECT may also be used as a HASH_OBJECT via the ANY_OBJECT
union and that HASH_OBJECT can leave bad size inidicators in TPM2B
buffer in the OBJECT. To get rid of this problem we reset the whole
OBJECT to 0 before using it. This is as if the memory for the
OBJECT was just initialized.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
This commit is contained in:
Stefan Berger 2021-07-22 21:23:58 -04:00 committed by Stefan Berger
parent fb908ef3c9
commit 4b1a4e5bfa
1 changed files with 2 additions and 1 deletions
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3
src/tpm2/Object.c
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@ -284,7 +284,8 @@ FindEmptyObjectSlot(
if(handle)
*handle = i + TRANSIENT_FIRST;
// Initialize the object attributes
MemorySet(&object->attributes, 0, sizeof(OBJECT_ATTRIBUTES));
// MemorySet(&object->attributes, 0, sizeof(OBJECT_ATTRIBUTES));
MemorySet(object, 0, sizeof(*object)); // libtpms added: Initialize the whole object
return object;
}
}