64bit kernels inappropriately reporting they are using NX emulation
Bug #454285 reported by
Kees Cook
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Low
|
Kees Cook | ||
Karmic |
Fix Released
|
Low
|
Kees Cook |
Bug Description
At boot, the 64bit kernels are reporting:
[ 0.000000] Using x86 segment limits to approximate NX protection
This is not correct, as NX bits do not need extra work to set up on 64bit. The "nx_enabled" flag is not being correctly set, so the message is misleading.
CVE References
Changed in linux (Ubuntu Karmic): | |
milestone: | none → ubuntu-9.10 |
assignee: | nobody → Kees Cook (kees) |
tags: |
added: verification-done removed: verification-failed verification-needed |
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Updated with even better message!