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#memfd

2 posts

LinuxDeep Dive October 3, 2026 7 min read

Linux memfd File Seals: Immutable Shared Data Without a Pathname

Publish Linux memfd data safely with file seals, understand writable mappings and descriptor transfer, and distinguish immutable blobs from secret memory.

#linux#memfd#file-descriptors

LinuxDeep Dive October 2, 2026 5 min read

Linux memfd_secret: Isolating Sensitive Userspace Memory

Learn what Linux memfd_secret protects, how its file-descriptor and mapping lifecycle works, and where its security guarantees stop.

#linux#memory#security