staging: rtl8192e: Fix possible buffer overflow in _rtl92e_wx_set_scan

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commit 8687bf9ef9 upstream.

Function _rtl92e_wx_set_scan calls memcpy without checking the length.
A user could control that length and trigger a buffer overflow.
Fix by checking the length is within the maximum allowed size.

Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lee Gibson <leegib@gmail.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210226145157.424065-1-leegib@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Lee Gibson 2021-02-26 14:51:57 +00:00 • committed by Greg Kroah-Hartman

parent 74a14d8ae2

commit c5d3e25e18

1 changed files with 4 additions and 3 deletions

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drivers/staging/rtl8192e/rtl8192e/rtl_wx.c

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