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docs: Clarify details for reporting security bugs 

The kernel security team is regularly asked to provide CVE identifiers,
which we don't normally do. This updates the documentation to mention
this and adds some more details about coordination and patch handling
that come up regularly. Based on an earlier draft by Willy Tarreau.

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Kees Cook 2017-03-06 11:13:51 -08:00 committed by Jonathan Corbet
parent 9fe64e1514
commit 49978be705
1 changed files with 34 additions and 5 deletions
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39
Documentation/admin-guide/security-bugs.rst
View File

@ -14,14 +14,17 @@ Contact
The Linux kernel security team can be contacted by email at
<security@kernel.org>. This is a private list of security officers
who will help verify the bug report and develop and release a fix.
It is possible that the security team will bring in extra help from
area maintainers to understand and fix the security vulnerability.
If you already have a fix, please include it with your report, as
that can speed up the process considerably. It is possible that the
security team will bring in extra help from area maintainers to
understand and fix the security vulnerability.
As it is with any bug, the more information provided the easier it
will be to diagnose and fix. Please review the procedure outlined in
admin-guide/reporting-bugs.rst if you are unclear about what information is helpful.
Any exploit code is very helpful and will not be released without
consent from the reporter unless it has already been made public.
admin-guide/reporting-bugs.rst if you are unclear about what
information is helpful. Any exploit code is very helpful and will not
be released without consent from the reporter unless it has already been
made public.
Disclosure
----------
@ -39,6 +42,32 @@ disclosure is from immediate (esp. if it's already publicly known)
to a few weeks. As a basic default policy, we expect report date to
disclosure date to be on the order of 7 days.
Coordination
------------
Fixes for sensitive bugs, such as those that might lead to privilege
escalations, may need to be coordinated with the private
<linux-distros@vs.openwall.org> mailing list so that distribution vendors
are well prepared to issue a fixed kernel upon public disclosure of the
upstream fix. Distros will need some time to test the proposed patch and
will generally request at least a few days of embargo, and vendor update
publication prefers to happen Tuesday through Thursday. When appropriate,
the security team can assist with this coordination, or the reporter can
include linux-distros from the start. In this case, remember to prefix
the email Subject line with "[vs]" as described in the linux-distros wiki:
<http://oss-security.openwall.org/wiki/mailing-lists/distros#how-to-use-the-lists>
CVE assignment
--------------
The security team does not normally assign CVEs, nor do we require them
for reports or fixes, as this can needlessly complicate the process and
may delay the bug handling. If a reporter wishes to have a CVE identifier
assigned ahead of public disclosure, they will need to contact the private
linux-distros list, described above. When such a CVE identifier is known
before a patch is provided, it is desirable to mention it in the commit
message, though.
Non-disclosure agreements
-------------------------