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commit 5f1c7031e044cb2fba82836d55cc235e2ad619dc upstream.
The "exc->key_len" is a u16 that comes from the user. If it's over
IW_ENCODING_TOKEN_MAX (64) that could lead to memory corruption.
Fixes: b121d84882b9 ("staging: ks7010: simplify calls to memcpy()")
Cc: stable <stable@kernel.org>
Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/tencent_5153B668C0283CAA15AA518325346E026A09@qq.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
663fff29fd