Re: [CHECKER] potential dereference of user pointer errors

From: Chris Wright (chris@wirex.com)
Date: Fri Mar 21 2003 - 19:15:50 EST

Next message: Larry McVoy: "Re: [ANNOUNCE] BK->CVS (real time mirror)"
Previous message: Jos Hulzink: "Re: aic7(censored) dying horribly in 2.5.65-mm2 (fwd)"
In reply to: Junfeng Yang: "[CHECKER] potential dereference of user pointer errors"
Next in thread: Greg KH: "Re: [CHECKER] potential dereference of user pointer errors"
Reply: Greg KH: "Re: [CHECKER] potential dereference of user pointer errors"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

* Junfeng Yang (yjf@stanford.edu) wrote:
>
> [MINOR] in debug data
>
> /home/junfeng/linux-2.5.63/drivers/usb/serial/kobil_sct.c:429:kobil_write:
> ERROR:TAINTED deferencing "buf" tainted by [dist=0][copy_from_user:parm1]

This is a bug, which could print kernel data if debugging was enabled.
Greg, any reason the debug info can't just use the priv->buf?

thanks,
-chris

-- 
Linux Security Modules     http://lsm.immunix.org     http://lsm.bkbits.net
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Next message: Larry McVoy: "Re: [ANNOUNCE] BK->CVS (real time mirror)"
Previous message: Jos Hulzink: "Re: aic7(censored) dying horribly in 2.5.65-mm2 (fwd)"
In reply to: Junfeng Yang: "[CHECKER] potential dereference of user pointer errors"
Next in thread: Greg KH: "Re: [CHECKER] potential dereference of user pointer errors"
Reply: Greg KH: "Re: [CHECKER] potential dereference of user pointer errors"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

This archive was generated by hypermail 2b29 : Sun Mar 23 2003 - 22:00:39 EST