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On Thursday 25 July 2013 10:09:50 Siddhesh Poyarekar wrote: > On 25 July 2013 19:37, Markus Trippelsdorf wrote: > > On 2013.07.19 at 01:55 -0400, Carlos O'Donell wrote: > >> CVE-2013-2207: pt_chown tricked into granting access to another > >> users pseudo-terminal > > > > Just a heads up. > > > > This patch causes Konsole and tmux startup failures on my machine, e.g.: > > konsole(364)/kdecore (KPty/K3Process) KPty::open: Can't open a pseudo > > teletype > > > > To fix this issue I had to remount devpts with gid=5: > > mount -o remount,gid=5 /dev/pts/ > > > > My original fstab had this entry: > > devpts /dev/pts devpts rw,relatime,mode=600 0 0 > > That's expected. /dev/pts should always be mounted with gid=5 where 5 > is the gid of the tty group. It's a distribution bug if that was how > it set up the system by default. the other common way i've seen this be triggered is chroots. since devpts is a shared mount point, if you mount it somewhere else (`mount -t devpts devpts /some/chroot/dev/pts`), it is actually shared (including mount options) with the original one. so people have to fix up their chroot scripts to not mess up those options. -mike
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