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Subject[PATCH v2] hda_hwdep: Fix possible buffer overflow
Date
If a line in the firmware file is larger than the given buffer size (and
so the firmware file size), size is set to a value larger than the actual
buffer size. This results in an overflow in the buffer passed.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
---
Changes in v2:
* Just remove the erroneous check
sound/pci/hda/hda_hwdep.c | 2 --
1 files changed, 0 insertions(+), 2 deletions(-)
diff --git a/sound/pci/hda/hda_hwdep.c b/sound/pci/hda/hda_hwdep.c
index 72e5885..7e7d078 100644
--- a/sound/pci/hda/hda_hwdep.c
+++ b/sound/pci/hda/hda_hwdep.c
@@ -756,8 +756,6 @@ static int get_line_from_fw(char *buf, int size, struct firmware *fw)
}
if (!fw->size)
return 0;
- if (size < fw->size)
- size = fw->size;

for (len = 0; len < fw->size; len++) {
if (!*p)
--
1.7.3.4


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