From: Alex Ng <>

There's a bug which passes the output buffer size as MAX_IP_ADDR_SIZE,
when converting the adapter_id field to UTF16. This is much larger than
the actual size (MAX_ADAPTER_ID_SIZE). Fix this by passing the proper

Fortunately, the translation is limited by the length of the input. This
explains why we haven't seen output buffer overflow conditions.

Signed-off-by: Alex Ng <>
Signed-off-by: K. Y. Srinivasan <>
 drivers/hv/hv_kvp.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/hv/hv_kvp.c b/drivers/hv/hv_kvp.c
index 9a90b91..5eed1e7 100644
--- a/drivers/hv/hv_kvp.c
+++ b/drivers/hv/hv_kvp.c
@@ -304,7 +304,7 @@ static int process_ob_ipinfo(void *in_msg, void *out_msg, 
int op)
                                strlen((char *)in->body.kvp_ip_val.adapter_id),
                                (wchar_t *)out->kvp_ip_val.adapter_id,
-                               MAX_IP_ADDR_SIZE);
+                               MAX_ADAPTER_ID_SIZE);
                if (len < 0)
                        return len;

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