Date: Sun, 2 Oct 2011 04:20:08 GMT From: Hiroshi Saeki <h-saeki@wmail.plala.or.jp> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/161159: FreeBSD-SA-11:05.unix patch causes Linux emulator X error Message-ID: <201110020420.p924K86e054391@freefall.freebsd.org>
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The following reply was made to PR kern/161159; it has been noted by GNATS. From: Hiroshi Saeki <h-saeki@wmail.plala.or.jp> To: Chris <skvortsov42@gmail.com>, bug-followup@FreeBSD.org Cc: Subject: Re: kern/161159: FreeBSD-SA-11:05.unix patch causes Linux emulator X error Date: Sun, 02 Oct 2011 13:11:32 +0900 (2011/10/02 11:00), Chris wrote: > I can confirm this: Flash is dead as a doornail now. I sent send-pr,but those who are in The FreeBSD Project already knew this issue. In http://home.jp.freebsd.org/cgi-bin/showmail/FreeBSD-users-jp/93524 (In Japanese), Hiroki Sato,Core Team member, states: "The reason of this error is that FreeBSD-SA-11:05.unix makes another bug tangible. We will publish patch to fix this newer bug soon. Please wait a while." (my translation) Also, in From: "Bjoern A. Zeeb" <bz@zabbadoz.net> To: Andrew <andrew@flarn.com> Cc: freebsd-ports@freebsd.org Subject: Re: Linuxulator X11 broken? Date: Fri, 30 Sep 2011 09:08:34 +0000 Sender: owner-freebsd-ports@freebsd.org X-Mailer: Apple Mail (2.1084) Bjoern A. Zeeb,Security Team member, states: "It will always do that. There's a linuxolator bug in the kernel that the latest SAs unhid. People are working on it but it'll need fixing in all security branches so it's not a 3 minute task unfortunately. /bz" And Date: Fri, 30 Sep 2011 01:00:25 -0700 From: FreeBSD Security Officer <cperciva@freebsd.org> To: freebsd-security@freebsd.org, freebsd-emulation@freebsd.org Subject: HEADS UP: breakage with linux emulation + SA-11:05.unix Message-ID: <4E857719.7060306@freebsd.org> Next in thread | Raw E-Mail | Index | Archive | Help Hi all, It appears that the security fix in SA-11:05.unix exposed a bug in the linux emulation code: Linux has a different size of sockaddr_un than FreeBSD, and the linux emulation code was passing socket addresses through without doing any translation first. This appears to break all X-using Linux code -- both applications and plugins such as the widely-used flash plugin -- and probably other Linux applications too. I am working on a fix for this and will send an updated advisory out as soon as it's ready. -- Colin Percival Security Officer, FreeBSD | freebsd.org | The power to serve Founder / author, Tarsnap | tarsnap.com | Online backups for the truly paranoid It seems to me that work is surely in progress before I sent send-pr. I don't want to confuse The FreeBSD Project developers. Regards, Hiroshi Saeki
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