|Linux kernel developers take security very seriously. As such, we'd
|like to know when a security bug is found so that it can be fixed and
|disclosed as quickly as possible. Please report security bugs to the
|Linux kernel security team.
|The Linux kernel security team can be contacted by email at
|<email@example.com>. This is a private list of security officers
|who will help verify the bug report and develop and release a fix.
|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
|'Documentation/admin-guide/reporting-issues.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
|Please send plain text emails without attachments where possible.
|It is much harder to have a context-quoted discussion about a complex
|issue if all the details are hidden away in attachments. Think of it like a
|:doc:`regular patch submission <../process/submitting-patches>`
|(even if you don't have a patch yet): describe the problem and impact, list
|reproduction steps, and follow it with a proposed fix, all in plain text.
|Disclosure and embargoed information
|The security list is not a disclosure channel. For that, see Coordination
|Once a robust fix has been developed, the release process starts. Fixes
|for publicly known bugs are released immediately.
|Although our preference is to release fixes for publicly undisclosed bugs
|as soon as they become available, this may be postponed at the request of
|the reporter or an affected party for up to 7 calendar days from the start
|of the release process, with an exceptional extension to 14 calendar days
|if it is agreed that the criticality of the bug requires more time. The
|only valid reason for deferring the publication of a fix is to accommodate
|the logistics of QA and large scale rollouts which require release
|While embargoed information may be shared with trusted individuals in
|order to develop a fix, such information will not be published alongside
|the fix or on any other disclosure channel without the permission of the
|reporter. This includes but is not limited to the original bug report
|and followup discussions (if any), exploits, CVE information or the
|identity of the reporter.
|In other words our only interest is in getting bugs fixed. All other
|information submitted to the security list and any followup discussions
|of the report are treated confidentially even after the embargo has been
|lifted, in perpetuity.
|Fixes for sensitive bugs, such as those that might lead to privilege
|escalations, may need to be coordinated with the private
|<firstname.lastname@example.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:
|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 if the reporter agrees.
|The Linux kernel security team is not a formal body and therefore unable
|to enter any non-disclosure agreements.