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Old 20th April 2017
beiroot beiroot is offline
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Default RCE in Linux Kernel via UDP packet

Ok, so most of you probably already know this:

https://www.cvedetails.com/cve/CVE-2016-10229/

What do you think of this bug?

I read a puzzling comment on one of the sec forums saying something like "it's not a bug, it's an NSA backdoor. A good programmer would never write a code in such a stupid manner. I really wonder why Linus would let such bug through."

I am not a kernel, nor a C developer myself, so I can't really comment whether this is reasonable or just a buffoonery. What do you think?

And my final question is, half a joke half seriously, why such a bug is not possible in OpenBSD kernel?

Last edited by beiroot; 20th April 2017 at 03:17 PM. Reason: typo
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Old 20th April 2017
e1-531g e1-531g is offline
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https://twitter.com/taviso/status/852571815079591936
https://plus.google.com/+EricDumazet/posts/ZQie5XjAic2
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Old 21st April 2017
beiroot beiroot is offline
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ok...and?
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Old 21st April 2017
cynwulf cynwulf is offline
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Quote:
Originally Posted by beiroot View Post
What do you think of this bug?
It seems serious enough.

Quote:
Originally Posted by beiroot View Post
I read a puzzling comment on one of the sec forums saying something like "it's not a bug, it's an NSA backdoor. A good programmer would never write a code in such a stupid manner. I really wonder why Linus would let such bug through."
Sounds like "buffoonery". Forums and social network sites are usually low on fact and high on FUD.

If it were an "NSA backdoor", it would have been noticed.

RHEL's kernel wasn't affected because apparently that code wasn't implemented: https://bugzilla.redhat.com/show_bug.cgi?id=1439740

It shouldn't affect any OS which doesn't use the Linux kernel's ipv4 stack.

It's patched upstream of course, but all of the phones, smart devices and domestic home networking hardware and miscellaneous embedded stuff will probably still go unpatched by the vendor/user.

This one is another example of where the old "given enough eyeballs, all bugs are shallow" falls down (Heartbleed and ShellShock being more notable ones).

Last edited by cynwulf; 21st April 2017 at 12:00 PM.
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