Ubuntu
linux package

cs-limit nx-emulation for ia32

Bug #369978 reported by Kees Cook
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Fix Released
Wishlist
Kees Cook
Ubuntu karmic-alpha-1
Karmic
Fix Released
Wishlist
Kees Cook
Ubuntu karmic-alpha-1

Bug Description

Implementing the cs-limit nx-emulation for ia32 when hardware nx is unavailable is desired by the security team.

Related branches

lp:ubuntu/karmic/linux-ports
Kees Cook (kees)
Changed in linux (Ubuntu Karmic):
importance: Undecided → Wishlist
status: New → Triaged
Revision history for this message
Kees Cook (kees) wrote :

http://www.codemonkey.org.uk/projects/execshield/

Patches 01 and 02 are needed to get funtional nx-emu. Attached is the ported patch for Jaunty, which tests out well.

Revision history for this message
Kees Cook (kees) wrote :

Ported to karmic. I'm unsure of the kernel/tlb_32.c to mm/tlb.c change, as the get_cpu/put_cpu vanished. It seems like the cpu is under lock in the function, so I ignored the lack of get_cpu. This tests out fine for me on ia32.

Changed in linux (Ubuntu Karmic):
assignee: nobody → Kees Cook (kees)
milestone: none → karmic-alpha-1
status: Triaged → In Progress
Revision history for this message
Tim Gardner (timg-tpi) wrote :

UBUNTU: SAUCE: [x86] implement cs-limit nx-emulation for ia32

Changed in linux (Ubuntu Karmic):
status: In Progress → Fix Committed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux - 2.6.30-3.4

---------------
linux (2.6.30-3.4) karmic; urgency=low

  [ Kees Cook ]

  * SAUCE: [x86] implement cs-limit nx-emulation for ia32
    - LP: #369978

  [ Stefan Bader ]

  * SAUCE: input: Blacklist digitizers from joydev.c
    - LP: #300143

 -- Tim Gardner <email address hidden> Fri, 01 May 2009 14:00:42 -0600

Changed in linux (Ubuntu Karmic):
status: Fix Committed → Fix Released
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