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Differential D57547

kern_linker: Do not reveal address without root
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Authored by aokblast on Fri, Jun 12, 11:28 AM.

Details

Reviewers
olce
markj
emaste
Summary

Disable address explosure while we are not in root

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Passed
Unit
No Test Coverage
Build Status
Buildable 73838
Build 70721: arc lint + arc unit

Event Timeline

aokblast created this revision.Fri, Jun 12, 11:28 AM
Herald added subscribers: olce, imp. · View Herald TranscriptFri, Jun 12, 11:28 AM
aokblast requested review of this revision.Fri, Jun 12, 11:28 AM
Harbormaster completed remote builds in B73838: Diff 179641.Fri, Jun 12, 11:28 AM
aokblast added a comment.Fri, Jun 12, 1:59 PM

I think this needs some discussion so I just put it in here.

olce accepted this revision.Fri, Jun 12, 2:44 PM

Makes sense on a quick look. Preferably wait for others' feedbacks.

This revision is now accepted and ready to land.Fri, Jun 12, 2:44 PM
aokblast added reviewers: markj, emaste.Fri, Jun 12, 5:16 PM
markj added a comment.Fri, Jun 12, 5:26 PM

Why? We do not randomize the kernel address space. There are many many ways to leak kernel pointers, this is just one of them.

Revision Contents
Changeset List

PathSize
sys/
kern/
3 lines

Diff 179641

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sys/kern/kern_linker.c

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