New Spectre-v2 BTR Attack Leaks Linux Memory Despite Existing Defenses

The Hacker News · Tuesday, 29 September 2026 at 17:20 (yesterday) · Original article ↗

A group of academics from VUSec and Scuola Superiore Sant'Anna have disclosed details of a new Spectre CPU vulnerability variant that affects Just-In-Time (JIT) engines present in web browsers, language runtimes, and the operating system kernel, across multiple CPU vendors.

The new Spectre v2 variant has been codenamed Branch Target Reuse (BTR).

"The key insight is that, while modern CPUs

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New Spectre-v2 BTR Attack Leaks Linux Memory Despite Existing Defenses

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