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- .. _securitybugs:
- Security bugs
- =============
- 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.
- 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.
- 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.
- Disclosure
- ----------
- The goal of the Linux kernel security team is to work with the bug
- submitter to understand and fix the bug. We prefer to publish the fix as
- soon as possible, but try to avoid public discussion of the bug itself
- and leave that to others.
- Publishing the fix may be delayed when the bug or the fix is not yet
- fully understood, the solution is not well-tested or for vendor
- coordination. However, we expect these delays to be short, measurable in
- days, not weeks or months. A release date is negotiated by the security
- team working with the bug submitter as well as vendors. However, the
- kernel security team holds the final say when setting a timeframe. The
- timeframe varies from immediate (esp. if it's already publicly known bug)
- to a few weeks. As a basic default policy, we expect report date to
- release 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
- -------------------------
- The Linux kernel security team is not a formal body and therefore unable
- to enter any non-disclosure agreements.
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