6 Linux kernel developers take security very seriously. As such, we'd
7 like to know when a security bug is found so that it can be fixed and
8 disclosed as quickly as possible. Please report security bugs to the
9 Linux kernel security team.
14 The Linux kernel security team can be contacted by email at
15 <security@kernel.org>. This is a private list of security officers
16 who will help verify the bug report and develop and release a fix.
17 If you already have a fix, please include it with your report, as
18 that can speed up the process considerably. It is possible that the
19 security team will bring in extra help from area maintainers to
20 understand and fix the security vulnerability.
22 As it is with any bug, the more information provided the easier it
23 will be to diagnose and fix. Please review the procedure outlined in
24 admin-guide/reporting-bugs.rst if you are unclear about what
25 information is helpful. Any exploit code is very helpful and will not
26 be released without consent from the reporter unless it has already been
29 Disclosure and embargoed information
30 ------------------------------------
32 The security list is not a disclosure channel. For that, see Coordination
35 Once a robust fix has been developed, the release process starts. Fixes
36 for publicly known bugs are released immediately.
38 Although our preference is to release fixes for publicly undisclosed bugs
39 as soon as they become available, this may be postponed at the request of
40 the reporter or an affected party for up to 7 calendar days from the start
41 of the release process, with an exceptional extension to 14 calendar days
42 if it is agreed that the criticality of the bug requires more time. The
43 only valid reason for deferring the publication of a fix is to accommodate
44 the logistics of QA and large scale rollouts which require release
47 Whilst embargoed information may be shared with trusted individuals in
48 order to develop a fix, such information will not be published alongside
49 the fix or on any other disclosure channel without the permission of the
50 reporter. This includes but is not limited to the original bug report
51 and followup discussions (if any), exploits, CVE information or the
52 identity of the reporter.
54 In other words our only interest is in getting bugs fixed. All other
55 information submitted to the security list and any followup discussions
56 of the report are treated confidentially even after the embargo has been
57 lifted, in perpetuity.
62 Fixes for sensitive bugs, such as those that might lead to privilege
63 escalations, may need to be coordinated with the private
64 <linux-distros@vs.openwall.org> mailing list so that distribution vendors
65 are well prepared to issue a fixed kernel upon public disclosure of the
66 upstream fix. Distros will need some time to test the proposed patch and
67 will generally request at least a few days of embargo, and vendor update
68 publication prefers to happen Tuesday through Thursday. When appropriate,
69 the security team can assist with this coordination, or the reporter can
70 include linux-distros from the start. In this case, remember to prefix
71 the email Subject line with "[vs]" as described in the linux-distros wiki:
72 <http://oss-security.openwall.org/wiki/mailing-lists/distros#how-to-use-the-lists>
77 The security team does not normally assign CVEs, nor do we require them
78 for reports or fixes, as this can needlessly complicate the process and
79 may delay the bug handling. If a reporter wishes to have a CVE identifier
80 assigned ahead of public disclosure, they will need to contact the private
81 linux-distros list, described above. When such a CVE identifier is known
82 before a patch is provided, it is desirable to mention it in the commit
83 message if the reporter agrees.
85 Non-disclosure agreements
86 -------------------------
88 The Linux kernel security team is not a formal body and therefore unable
89 to enter any non-disclosure agreements.