lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <2f4214c089c0269786abe1695fe7adec@sunraycer.home>
Date:   Wed, 09 Aug 2023 12:28:40 -0500
From:   steve <magnani@...e.org>
To:     Steve Magnani <magnani@...e.org>
Cc:     Quinn Tran <qutran@...vell.com>, linux-kernel@...r.kernel.org,
        Nilesh Javali <njavali@...vell.com>,
        GR-QLogic-Storage-Upstream@...vell.com,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Himanshu Madhani <himanshu.madhani@...cle.com>,
        linux-scsi@...r.kernel.org
Subject: Re: [PATCH] scsi: qla2xxx: Prevent firmware rejection of
 MBC_GET_RNID_PARAMS

Please disregard. It looks like the original patch b68710a8094f reduced 
the amount of data copied off so much that port logins are broken even 
though with my patch the firmware now processes GET_RNID_PARAMS. The 
breakage has been introduced during 6.5 (and propagated into 5.x stable 
branches) so there is some urgency to getting a proper fix.

I will send a short series to revert b68710a8094f and replace it with 
what I think is the correct overrun fix. AFAICT the overrun is only a 
single dword.


--Steve


On 2023-08-09 09:10, Steve Magnani wrote:
> At least some firmware (for example, QLE2692 FW 8.08.231 (d0d5)) 
> returns
> MBS_COMMAND_PARAMETER_ERROR when 
> MBC_GET_RNID_PARAMS(RNID_TYPE_PORT_LOGIN)
> is issued with a transfer length of 4 (DWords). Correct the overrun fix 
> to
> issue a "normal" transfer length and instead limit copy-out of desired
> PLOGI data to the space available for it.
> 
> Fixes: b68710a8094f ("scsi: qla2xxx: Fix buffer overrun")
> Signed-off-by: "Steven J. Magnani" <magnani@...e.org>
> ---
> --- a/drivers/scsi/qla2xxx/qla_init.c	2023-08-01 03:46:21.727114453 
> -0500
> +++ b/drivers/scsi/qla2xxx/qla_init.c	2023-08-08 23:18:46.475286995 
> -0500
> @@ -5549,7 +5549,8 @@ static void qla_get_login_template(scsi_
>  	__be32 *q;
> 
>  	memset(ha->init_cb, 0, ha->init_cb_size);
> -	sz = min_t(int, sizeof(struct fc_els_csp), ha->init_cb_size);
> +	/* At least some firmware requires sz > sizeof(fc_els_csp) */
> +	sz = min_t(int, sizeof(struct fc_els_flogi), ha->init_cb_size);
>  	rval = qla24xx_get_port_login_templ(vha, ha->init_cb_dma,
>  					    ha->init_cb, sz);
>  	if (rval != QLA_SUCCESS) {
> @@ -5560,6 +5561,7 @@ static void qla_get_login_template(scsi_
>  	q = (__be32 *)&ha->plogi_els_payld.fl_csp;
> 
>  	bp = (uint32_t *)ha->init_cb;
> +	sz = min_t(u32, sizeof(struct fc_els_csp), sz);
>  	cpu_to_be32_array(q, bp, sz / 4);
>  	ha->flags.plogi_template_valid = 1;
>  }

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ