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A Review of the Linux Kernel’s Release Signing and Key Management Policies

Submitted by Roy Schestowitz on Wednesday 23rd of June 2021 09:10:41 PM Filed under
Security

  • A Review of the Linux Kernel’s Release Signing and Key Management Policies

    The Linux Foundation sought a review of the kernel teams’ processes for release signing and for the policies and procedures for the handling of the signing keys. Working with OSTIF, Trail of Bits was selected to lead the project and a two person-week review was conducted.

    Unlike most OSTIF projects, this review did not cover code but was a policy and process overview to identify potential pain points in the key handling and key signing processes for one of the most critical pieces of infrastructure in the world. As such, there are no CVEs nor CIDs addressing vulnerabilities.

    Special thank-you’s go out to Greg Kroah-Hartman and Konstantin Ryabitsev for participating in the interviews that helped the reviewers clarify the documentation and setting aside time to discuss the researchers’ findings. Thank you to David A. Wheeler and Mike Dolan at the Linux Foundation for helping to facilitate the project. Thank you to Jim Miller, Mike Martel, Opal Wright, and Cara Pearson for their work in this review and for writing this assessment. And finally, a special thank you to Dan Guido at Trail of Bits for working with us to improve critical open source infrastructure.

  • A review of the kernel's release-signing practices [LWN.net]

    At the behest of the Linux Foundation, a security-oriented review of the kernel project's release-signing and key-management practices was done; the report from this work has now been published.

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