Mitigation for "Meltdown" on 32-bit (x86_32) is available - please update 'SpectreAndMeltdown' on Ubuntu Wiki.
Hello.
Linux v4.19 kernel, finally have a Kernel Page-Table Isolation, which means that 'PTI' (previously known as 'KAISER') support for x86_32 architecture is available. 'PTI' provides protection against attack, known as "Meltdown" (CVE-2017-5754), that breaks isolation between user applications and the operating system etc. However, this protection - needed for mitigation - wasn't available on 32-bit x86 systems. Until now.
In my opinion, that is something we really need to be looking at (I mean "Meltdown" mitigation for x86_32 architecture etc.). We should also give attention to the "SpectreAndMelt
✗ No fix is currently available for Meltdown on 32-bit x86; moving to a 64-bit kernel is the currently recommended mitigation.
However, that's not true anymore. I think, that it could literally, I mean "Current Status" chapter, be changed and updated with a proper informations etc. I would like to help to correct this situation and suggest something. So here are some ideas:
✓ 32-bit x86 finally have Kernel Page-Table Isolation support to mitigate "Meltdown" attack. It is available in Linux v4.19. 'PTI' will be backported to all supported Ubuntu releases.
✓ Fix/mitigation for Meltdown on 32-bit x86 is already available in Linux v4.19 and - in nearly future - will be backported to all Ubuntu supported releases.
These are just my ideas. Honestly, I think, that since 'PTI' is available for x86_32 architecture, "SpectreAndMelt
Thanks, best regards.
Blueprint information
- Status:
- Not started
- Approver:
- None
- Priority:
- Undefined
- Drafter:
- daniel CURTIS
- Direction:
- Needs approval
- Assignee:
- None
- Definition:
- New
- Series goal:
- None
- Implementation:
- Unknown
- Milestone target:
- None
- Started by
- Completed by