ext4

Evidence (4)

• 8Cloudflare Blog·9/24/2026security
  Cloudflare fixes cross-tenant data exposure in Containers

  Cloudflare says it fully remediated a vulnerability in Cloudflare Containers and Cloudflare Sandboxes that could let a customer recover residual data blocks from another tenant on the same host. The issue stemmed from thin-provisioned storage with block zeroing disabled, and Cloudflare reports no evidence of customer data compromise or malicious exploitation.

• 4Hacker News·8/13/2026open_source
  systemd-journald can write large amounts of disk data for a single log line

  A Hacker News discussion highlights a systemd issue reporting that a single log line can trigger unusually large disk writes in systemd-journald, with measurements exceeding 49 KB on ext4 and 110 KB on btrfs. The report focuses on journald’s write amplification behavior and its potential performance and storage impact on Linux systems.

• 5InfoQ·7/22/2026research
  Anthropic Explains Claude Containment Across Web, Code, and Cowork

  Anthropic outlined the containment architectures it uses to constrain Claude across its products, emphasizing deterministic limits on filesystem, network, and execution access. The company said failures at trust boundaries and on allowed egress paths informed revisions to these safety designs.

• 3Hacker News·7/19/2026open_source
  Rebuilding a Raspberry Pi home server after microSD failure

  The author describes a Raspberry Pi 4B home server that became unbootable after a likely failed microSD card, worsened by a recent power outage. They rebuilt the setup with a focus on reducing writes to the SD card, adding backups and redundancy, and moving volatile data to RAM-based storage and zram swap under NixOS.