New TONTOU CPU attack bypasses Spectre v2 fixes, leaks Linux password hashes

Researchers found a way to bypass recent mitigations for Spectre v2 speculative execution side-channel attacks and developed an exploit to leak secrets from Linux machines. [...]

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https://www.bleepingcomputer.com/news/security/new-tontou-cpu-attack-bypasses-spectre-v2-fixes-leaks-linux-password-hashes/

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https://www.bleepingcomputer.com/news/security/new-tontou-cpu-attack-bypasses-spectre-v2-fixes-leaks-linux-password-hashes/

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Ionut Ilascu

id: 2428
uid: DtlzV
insdate: 2026-08-06 18:10:05
title: New TONTOU CPU attack bypasses Spectre v2 fixes, leaks Linux password hashes
additional: Researchers found a way to bypass recent mitigations for Spectre v2 speculative execution side-channel attacks and developed an exploit to leak secrets from Linux machines. [...]
category: Cybersecurity
md5:
guid: https://www.bleepingcomputer.com/news/security/new-tontou-cpu-attack-bypasses-spectre-v2-fixes-leaks-linux-password-hashes/
source_url: https://www.bleepingcomputer.com/news/security/new-tontou-cpu-attack-bypasses-spectre-v2-fixes-leaks-linux-password-hashes/
updated:
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author_name: Ionut Ilascu
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