Linux Kernel

Projects that follow the best practices below can voluntarily self-certify and show that they've achieved an Open Source Security Foundation (OpenSSF) best practices badge.

If this is your project, please show your badge status on your project page! The badge status looks like this: Badge level for project 34 is gold Here is how to embed it:

These are the Gold level criteria. You can also view the Passing or Silver level criteria.

        

 Basics 5/5

  • Identification

    The Linux kernel.

  • Prerequisites


    The project MUST achieve a silver level badge. [achieve_silver]

  • Project oversight


    Mradi LAZIMA uwe na "bus factor" ya 2 au zaidi. (URL required) [bus_factor]

    Mradi LAZIMA uwe na angalau wachangiaji wawili wasiohusika. (URL required) [contributors_unassociated]
  • Other


    The project MUST include a license statement in each source file. This MAY be done by including the following inside a comment near the beginning of each file: SPDX-License-Identifier: [SPDX license expression for project]. [license_per_file]
  • Public version-controlled source repository


    The project's source repository MUST use a common distributed version control software (e.g., git or mercurial). [repo_distributed]

    The project MUST clearly identify small tasks that can be performed by new or casual contributors. (URL required) [small_tasks]

    The project MUST require two-factor authentication (2FA) for developers for changing a central repository or accessing sensitive data (such as private vulnerability reports). This 2FA mechanism MAY use mechanisms without cryptographic mechanisms such as SMS, though that is not recommended. [require_2FA]

    The project's two-factor authentication (2FA) SHOULD use cryptographic mechanisms to prevent impersonation. Short Message Service (SMS) based 2FA, by itself, does NOT meet this criterion, since it is not encrypted. [secure_2FA]
  • Coding standards


    Mradi LAZIMA uandike mahitaji yake ya kukagua msimbo, pamoja na jinsi ukaguzi wa nambari unafanywa, nini lazima ichunguzwe, na nini kinachohitajika ili ikubalike. (URL required) [code_review_standards]

    The project MUST have at least 50% of all proposed modifications reviewed before release by a person other than the author, to determine if it is a worthwhile modification and free of known issues which would argue against its inclusion [two_person_review]
  • Working build system


    The project MUST have a reproducible build. If no building occurs (e.g., scripting languages where the source code is used directly instead of being compiled), select "not applicable" (N/A). (URL required) [build_reproducible]
  • Automated test suite


    A test suite MUST be invocable in a standard way for that language. (URL required) [test_invocation]

    The project MUST implement continuous integration, where new or changed code is frequently integrated into a central code repository and automated tests are run on the result. (URL required) [test_continuous_integration]

    https://01.org/lkp/documentation/0-day-test-service The 0-day bot does testing of every commit before it is merged into the main repository.



    The project MUST have FLOSS automated test suite(s) that provide at least 90% statement coverage if there is at least one FLOSS tool that can measure this criterion in the selected language. [test_statement_coverage90]

    There is no such tool that can provide this.

    And code coverage is not an indication of code quality :)



    The project MUST have FLOSS automated test suite(s) that provide at least 80% branch coverage if there is at least one FLOSS tool that can measure this criterion in the selected language. [test_branch_coverage80]

    No such tool can provide this.


  • Use basic good cryptographic practices

    Note that some software does not need to use cryptographic mechanisms. If your project produces software that (1) includes, activates, or enables encryption functionality, and (2) might be released from the United States (US) to outside the US or to a non-US-citizen, you may be legally required to take a few extra steps. Typically this just involves sending an email. For more information, see the encryption section of Understanding Open Source Technology & US Export Controls.

    The software produced by the project MUST support secure protocols for all of its network communications, such as SSHv2 or later, TLS1.2 or later (HTTPS), IPsec, SFTP, and SNMPv3. Insecure protocols such as FTP, HTTP, telnet, SSLv3 or earlier, and SSHv1 MUST be disabled by default, and only enabled if the user specifically configures it. If the software produced by the project does not support network communications, select "not applicable" (N/A). [crypto_used_network]

    The kernel implements network packets in general; applications running on top request or perform network communication. The kernel does implement IPSEC, which is used if requested. Otherwise, the user specifically requests or configures whatever network protocol is used.



    The software produced by the project MUST, if it supports or uses TLS, support at least TLS version 1.2. Note that the predecessor of TLS was called SSL. If the software does not use TLS, select "not applicable" (N/A). [crypto_tls12]

    The kernel properly implements TLS if you are so crazy as to wish to use it from within kernelspace.


  • Secured delivery against man-in-the-middle (MITM) attacks


    The project website, repository (if accessible via the web), and download site (if separate) MUST include key hardening headers with nonpermissive values. (URL required) [hardened_site]

    https://kernel.org // One or more of the required security hardening headers is missing.


  • Other security issues


    The project MUST have performed a security review within the last 5 years. This review MUST consider the security requirements and security boundary. [security_review]

    Lots of people audit the kernel all the time for these types of issues.



    Hardening mechanisms MUST be used in the software produced by the project so that software defects are less likely to result in security vulnerabilities. (URL required) [hardening]

    The Linux kernel self protection project develops hardening improvements for the Linux kernel; many of them have already been accepted into the Linux kernel mainline: http://kernsec.org/wiki/index.php/Kernel_Self_Protection_Project There are a number of hardening mechanisms in the Linux kernel, such as Linux kernel stack protection.


  • Dynamic code analysis


    The project MUST apply at least one dynamic analysis tool to any proposed major production release of the software produced by the project before its release. [dynamic_analysis]

    https://01.org/lkp/documentation/0-day-test-service runs lots of these tools on all trees before release.



    The project SHOULD include many run-time assertions in the software it produces and check those assertions during dynamic analysis. [dynamic_analysis_enable_assertions]

    Look at all of the wonderful BUG_ON() calls in the kernel (hint, you really don't want those to ever trigger, but they are there...)



This data is available under the Creative Commons Attribution version 3.0 or later license (CC-BY-3.0+). All are free to share and adapt the data, but must give appropriate credit. Please credit Greg Kroah-Hartman and the OpenSSF Best Practices badge contributors.

Project badge entry owned by: Greg Kroah-Hartman.
Entry created on 2015-11-10 02:54:22 UTC, last updated on 2020-06-10 07:14:42 UTC. Last lost passing badge on 2018-06-14 15:39:52 UTC. Last achieved passing badge on 2018-06-14 16:10:57 UTC.

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