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Does making the kernel harder make making the kernel harder?
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lca
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lca2019
--room c3 14495 --force
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Marks
Author(s):
Casey Schaufler
Location
C3
Date
jan Fri 25
Days Raw Files
Start
11:35
First Raw Start
11:01
Duration
0:45:0
Offset
0:33:36
End
12:20
Last Raw End
12:31
Chapters
00:00
0:25:55
Total cuts_time
45 min.
https://2019.linux.conf.au/schedule/presentation/170/
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The Linux Kernel Hardening Project is making significant strides in reducing vulnerabilities and in increasing the effort required to exploit vulnerabilities that remain. Much of what has been implemented is obviously valuable, but sometimes the benefit is more subtle. How does the introduction of refcount_t make the kernel more secure, and by how much? What value is there in removing variable length arrays? Casey Schaufler, a (really) long time kernel developer will explain why some of these changes provide significantly greater value than might be apparent to the casual observer. He will discuss the cost of kernel hardening in terms of development overhead, code churn and performance.
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