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3.3 KiB
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76 lines
3.3 KiB
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.. _securitybugs:
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Security bugs
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=============
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Linux kernel developers take security very seriously. As such, we'd
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like to know when a security bug is found so that it can be fixed and
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disclosed as quickly as possible. Please report security bugs to the
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Linux kernel security team.
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Contact
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-------
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The Linux kernel security team can be contacted by email at
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<security@kernel.org>. This is a private list of security officers
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who will help verify the bug report and develop and release a fix.
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If you already have a fix, please include it with your report, as
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that can speed up the process considerably. It is possible that the
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security team will bring in extra help from area maintainers to
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understand and fix the security vulnerability.
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As it is with any bug, the more information provided the easier it
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will be to diagnose and fix. Please review the procedure outlined in
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admin-guide/reporting-bugs.rst if you are unclear about what
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information is helpful. Any exploit code is very helpful and will not
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be released without consent from the reporter unless it has already been
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made public.
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Disclosure
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----------
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The goal of the Linux kernel security team is to work with the
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bug submitter to bug resolution as well as disclosure. We prefer
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to fully disclose the bug as soon as possible. It is reasonable to
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delay disclosure when the bug or the fix is not yet fully understood,
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the solution is not well-tested or for vendor coordination. However, we
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expect these delays to be short, measurable in days, not weeks or months.
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A disclosure date is negotiated by the security team working with the
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bug submitter as well as vendors. However, the kernel security team
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holds the final say when setting a disclosure date. The timeframe for
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disclosure is from immediate (esp. if it's already publicly known)
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to a few weeks. As a basic default policy, we expect report date to
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disclosure date to be on the order of 7 days.
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Coordination
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------------
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Fixes for sensitive bugs, such as those that might lead to privilege
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escalations, may need to be coordinated with the private
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<linux-distros@vs.openwall.org> mailing list so that distribution vendors
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are well prepared to issue a fixed kernel upon public disclosure of the
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upstream fix. Distros will need some time to test the proposed patch and
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will generally request at least a few days of embargo, and vendor update
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publication prefers to happen Tuesday through Thursday. When appropriate,
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the security team can assist with this coordination, or the reporter can
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include linux-distros from the start. In this case, remember to prefix
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the email Subject line with "[vs]" as described in the linux-distros wiki:
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<http://oss-security.openwall.org/wiki/mailing-lists/distros#how-to-use-the-lists>
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CVE assignment
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--------------
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The security team does not normally assign CVEs, nor do we require them
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for reports or fixes, as this can needlessly complicate the process and
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may delay the bug handling. If a reporter wishes to have a CVE identifier
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assigned ahead of public disclosure, they will need to contact the private
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linux-distros list, described above. When such a CVE identifier is known
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before a patch is provided, it is desirable to mention it in the commit
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message, though.
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Non-disclosure agreements
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-------------------------
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The Linux kernel security team is not a formal body and therefore unable
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to enter any non-disclosure agreements.
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