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[codec,nsc] check for valid ColorLossLevel

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akallabeth 2024-04-20 15:05:36 +02:00 committed by akallabeth
parent ae7b32db75
commit 0b4db55707
1 changed files with 9 additions and 2 deletions
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11
libfreerdp/codec/nsc.c
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@ -86,8 +86,8 @@ static BOOL nsc_decode(NSC_CONTEXT* context)
for (UINT32 x = 0; x < context->width; x++)
{
INT16 y_val = (INT16)*yplane;
INT16 co_val = (INT16)(INT8)(*coplane << shift);
INT16 cg_val = (INT16)(INT8)(*cgplane << shift);
INT16 co_val = (INT16)(INT8)(((INT16)*coplane) << shift);
INT16 cg_val = (INT16)(INT8)(((INT16)*cgplane) << shift);
INT16 r_val = y_val + co_val - cg_val;
INT16 g_val = y_val + cg_val;
INT16 b_val = y_val - co_val - cg_val;
@ -250,6 +250,13 @@ static BOOL nsc_stream_initialize(NSC_CONTEXT* context, wStream* s)
}
Stream_Read_UINT8(s, context->ColorLossLevel); /* ColorLossLevel (1 byte) */
if ((context->ColorLossLevel < 1) || (context->ColorLossLevel > 7))
{
WLog_Print(context->priv->log, WLOG_ERROR,
"ColorLossLevel=%" PRIu8 " out of range, must be [1,7] inclusive",
context->ColorLossLevel);
return FALSE;
}
Stream_Read_UINT8(s, context->ChromaSubsamplingLevel); /* ChromaSubsamplingLevel (1 byte) */
Stream_Seek(s, 2); /* Reserved (2 bytes) */
context->Planes = Stream_Pointer(s);