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USB: chaoskey read offset bug

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Rng reads in chaoskey driver could return the same data under
the certain conditions.

Signed-off-by: Alexander Inyukhin <shurick@sectorb.msk.ru>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Inyukhin 2015-09-26 15:24:21 +03:00 committed by Greg Kroah-Hartman
parent 8484bf2981
commit 1d5c47f555
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/misc/chaoskey.c
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@ -472,7 +472,7 @@ static int chaoskey_rng_read(struct hwrng *rng, void *data,
if (this_time > max)
this_time = max;
memcpy(data, dev->buf, this_time);
memcpy(data, dev->buf + dev->used, this_time);
dev->used += this_time;