staging: rtl8712: uninitialized memory in read_bbreg_hdl()

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commit 22c971db7d upstream.

Colin King reported a bug in read_bbreg_hdl():

	memcpy(pcmd->rsp, (u8 *)&val, pcmd->rspsz);

The problem is that "val" is uninitialized.

This code is obviously not useful, but so far as I can tell
"pcmd->cmdcode" is never GEN_CMD_CODE(_Read_BBREG) so it's not harmful
either.  For now the easiest fix is to just call r8712_free_cmd_obj()
and return.

Fixes: 2865d42c78 ("staging: r8712u: Add the new driver to the mainline kernel")
Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

This commit is contained in:

Dan Carpenter 2019-03-21 09:26:38 +03:00 • committed by Ben Hutchings

parent 83ffc8b8e4

commit 1d6f09cbd4

2 changed files with 2 additions and 10 deletions

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10

drivers/staging/rtl8712/rtl8712_cmd.c

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2

drivers/staging/rtl8712/rtl8712_cmd.h

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