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xnu: Fix double free in grub_xnu_devprop_add_property()

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grub_xnu_devprop_add_property() should not free utf8 and utf16 as it get
allocated and freed in the caller.

Minor improvement: do prop fields initialization after memory allocations.

Fixes: CID 292442, CID 292457, CID 292460, CID 292466

Signed-off-by: Alexey Makhalov <amakhalov@vmware.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Alexey Makhalov 2020-07-08 21:30:43 +00:00 committed by Daniel Kiper
parent 26a8c19307
commit 6d7a59a2a1
1 changed files with 8 additions and 9 deletions
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17
grub-core/loader/i386/xnu.c
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@ -262,20 +262,19 @@ grub_xnu_devprop_add_property (struct grub_xnu_devprop_device_descriptor *dev,
if (!prop)
return grub_errno;
prop->name = utf8;
prop->name16 = utf16;
prop->name16len = utf16len;
prop->length = datalen;
prop->data = grub_malloc (prop->length);
prop->data = grub_malloc (datalen);
if (!prop->data)
{
grub_free (prop->name);
grub_free (prop->name16);
grub_free (prop);
return grub_errno;
}
grub_memcpy (prop->data, data, prop->length);
grub_memcpy (prop->data, data, datalen);
prop->name = utf8;
prop->name16 = utf16;
prop->name16len = utf16len;
prop->length = datalen;
grub_list_push (GRUB_AS_LIST_P (&dev->properties),
GRUB_AS_LIST (prop));
return GRUB_ERR_NONE;