| 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: Sat, 31 May 2014 11:49:24 +0200 From: Manuel Schoelling <manuel.schoelling@....de> To: Jakub Wilk <jwilk@...ian.org> Cc: plagnioj@...osoft.com, tomi.valkeinen@...com, geert@...ux-m68k.org, broonie@...aro.org, rdunlap@...radead.org, dh.herrmann@...il.com, airlied@...hat.com, mtosatti@...hat.com, linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] console: Add persistent scrollback buffers for all VGA consoles On Sa, 2014-05-31 at 00:26 +0200, Jakub Wilk wrote: > * Manuel Schölling <manuel.schoelling@....de>, 2014-05-30, 15:27: > >Add a scrollback buffers for each VGA console. The benefit is that the > >scrollback history is not flushed when switching between consoles but > >is persistent. > > Some people rely on this scrollback flushing as a security feature. Is > there even another way to clear the scrollback, than to switch to > another vt and then back again? Thanks for raising this security issue! Maybe we should add something like VT_FLUSH_SCROLLBACK to vt_ioctl()? [1] I'm open for better ways to flush the scrollback history. [1] http://lxr.free-electrons.com/source/drivers/tty/vt/vt_ioctl.c#L334 > Debian ships this: > http://manpages.debian.org/cgi-bin/man.cgi?query=clear_console > https://sources.debian.net/src/bash/4.2%2Bdfsg-0.1/debian/clear_console.c > -- 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