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Date: Fri, 08 Mar 2013 00:36:40 -0500 (EST) From: David Miller <davem@...emloft.net> To: gang.chen@...anux.com Cc: jslaby@...e.cz, jkosina@...e.cz, isdn@...ux-pingi.de, gregkh@...uxfoundation.org, alan@...ux.intel.com, netdev@...r.kernel.org Subject: Re: [PATCH v2] drivers/isdn: checkng length to be sure not memory overflow From: Chen Gang <gang.chen@...anux.com> Date: Fri, 08 Mar 2013 12:25:41 +0800 > > sizeof (cmd.parm.cmsg.para) is 50 (MAX_CAPI_PARA_LEN). > sizeof (cmd.parm) is 80+, but less than 100. > strlen(msg) may be more than 80+ (Modem-Commandbuffer, less than 255). > isdn_tty_send_msg is called by isdn_tty_parse_at > the relative parameter is m->mdmcmd (atemu *m) > the relative command may be "+M..." > > so need check the length to be sure not memory overflow. > cmd.parm is a union, and need keep original valid buffer length no touch > > > Signed-off-by: Chen Gang <gang.chen@...anux.com> Applied. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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