FROM MY NOTEBOOK

All writing.

06 POSTS

Writing on software, computer systems and technology.

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CVE-2026-83844 in Microsoft Paint: affected versions, the fix, and what an out-of-bounds read means.

The malicious code in version 2.1.313 on Cursor’s extension marketplace, and who may have been affected.

Where my seven-year hobby kernel project had reached in QEMU.

A plain-language look at PHP’s new RCE flaws, their discovery, and the available fixes.

A performance oddity exposed a supply-chain attack, the affected releases and questions about trust.

An operating system, a programming language and an extraordinary mind, built largely by one person.