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From 64544c7f4ed72b3023955ebe6ad3b118ebb8d6c7 Mon Sep 17 00:00:00 2001
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From: akallabeth <akallabeth@posteo.net>
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Date: Thu, 6 Oct 2022 09:12:40 +0200
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Subject: [PATCH] Fix length checks in parallel driver
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The length requested was not checked against the length read from
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the port.
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(cherry picked from commit 094cc5a4596c299595b732effd59ee149181fd61)
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---
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channels/parallel/client/parallel_main.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/channels/parallel/client/parallel_main.c b/channels/parallel/client/parallel_main.c
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index af3e82703..993605a65 100644
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--- a/channels/parallel/client/parallel_main.c
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+++ b/channels/parallel/client/parallel_main.c
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@@ -159,7 +159,7 @@ static UINT parallel_process_irp_read(PARALLEL_DEVICE* parallel, IRP* irp)
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return ERROR_INVALID_DATA;
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Stream_Read_UINT32(irp->input, Length);
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Stream_Read_UINT64(irp->input, Offset);
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- buffer = (BYTE*)malloc(Length);
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+ buffer = (BYTE*)calloc(Length, sizeof(BYTE));
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if (!buffer)
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{
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@@ -178,6 +178,7 @@ static UINT parallel_process_irp_read(PARALLEL_DEVICE* parallel, IRP* irp)
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}
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else
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{
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+ Length = status;
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}
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Stream_Write_UINT32(irp->output, Length);
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--
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2.37.1
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