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#6 The Hacker News general September 29, 2026 at 17:00 UTC

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

By [email protected] (The Hacker News)

AI Summary

Researchers from VUSec and Scuola Superiore Sant'Anna disclosed Branch Target Reuse (BTR), a new Spectre-v2 variant that bypasses existing mitigations and leaks Linux kernel memory by exploiting JIT engines in web browsers, language runtimes, and the OS kernel across Intel, AMD, and Arm CPUs. Unlike prior Spectre-v2 variants, BTR targets shared branch target buffers in JIT contexts, making it relevant to any environment running modern browsers or interpreted runtimes on Linux. No patch was immediately available at time of disclosure.

Read full article → https://thehackernews.com/2026/09/new-spectre-v2-b…

Relevance score: 83.0/100

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