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
| ||
|
Date: Mon, 19 Aug 2013 15:23:38 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: Daniel Gimpelevich <daniel@...pelevich.san-francisco.ca.us> Cc: Jan Dumon <j.dumon@...ion.com>, linux-usb@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] Fix stack corruption on some architectures On Mon, Aug 19, 2013 at 01:37:27PM -0700, Daniel Gimpelevich wrote: > There is no need to get an interface specification if we know it's the > wrong one; trivial change. The big thing, though, was explained in the > #mipslinux IRC channel: > [Mon 2013-08-19 12:28:21 PM PDT] <headless> guys, are you sure it's not "DMA off stack" case? > [Mon 2013-08-19 12:28:35 PM PDT] <headless> it's a known stack corruptor on non-coherent arches > [Mon 2013-08-19 12:31:48 PM PDT] <DonkeyHotei> headless: for usb/ehci? > [Mon 2013-08-19 12:34:11 PM PDT] <DonkeyHotei> headless: explain > [Mon 2013-08-19 12:35:38 PM PDT] <headless> usb_control_msg() (or other such func) should not use buffer on stack. DMA from/to stack is prohibited > [Mon 2013-08-19 12:35:58 PM PDT] <headless> and EHCI uses DMA on control xfers (as well as all the others) > > Signed-off-by: Daniel Gimpelevich <daniel@...pelevich.san-francisco.ca.us> Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists