rsi: fix memory leak on buf and usb_reg_buf

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[ Upstream commit d35ef8f846 ]

In the cases where len is too long, the error return path fails to
kfree allocated buffers buf and usb_reg_buf.  The simplest fix is to
perform the sanity check on len before the allocations to avoid having
to do the kfree'ing in the first place.

Detected by CoverityScan, CID#1452258,1452259 ("Resource Leak")

Fixes: 59f73e2ae1 ("rsi: check length before USB read/write register")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Colin Ian King 2017-11-16 17:39:18 +00:00 • committed by Greg Kroah-Hartman

parent ad199b18a9

commit f52688ce0d

1 changed files with 6 additions and 6 deletions

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drivers/net/wireless/rsi/rsi_91x_usb.c

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