Bug#797530: 32bit pie memory layout leaves only ~100MB between heap and stack

2016-10-31 Thread Christoph Berg
Re: Florian Weimer 2016-10-28 <87r3708aah@mid.deneb.enyo.de> > * Christoph Berg: > > > More details: > > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1518483 > > Why do you consider this a security issue? Do you consider it an > availability issue? > > I'm a bit confused why this sh

Bug#797530: 32bit pie memory layout leaves only ~100MB between heap and stack

2016-10-28 Thread Florian Weimer
* Christoph Berg: > More details: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1518483 Why do you consider this a security issue? Do you consider it an availability issue? I'm a bit confused why this shows up as a userspace allocation failure. glibc should switch to mmap (creating an

Bug#797530: 32bit pie memory layout leaves only ~100MB between heap and stack

2016-10-28 Thread Christoph Berg
More details: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1518483 Christoph

Bug#797530: 32bit pie memory layout leaves only ~100MB between heap and stack

2015-08-31 Thread Ben Hutchings
Control: tag -1 upstream fixed-upstream Control: found -1 4.0.8-2 Control: fixed -1 4.1.6-1 On Mon, 2015-08-31 at 13:41 +0200, Christoph Berg wrote: > Source: linux > Version: 3.16.7-ckt11-1 > Severity: important > > I'm still seeing a memory layout for pie executables on 32 bit that > only leave

Bug#797530: 32bit pie memory layout leaves only ~100MB between heap and stack

2015-08-31 Thread Christoph Berg
Source: linux Version: 3.16.7-ckt11-1 Severity: important I'm still seeing a memory layout for pie executables on 32 bit that only leaves a bit over 100MB between heap and stack: $ uname -a Linux feynman 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1 (2015-05-24) x86_64 GNU/Linux $ ./pie f756b000-