#6
The Hacker News
general
August 06, 2026 at 16:17 UTC
New Interrupt Injection Attack Can Bypass Spectre v2 Defenses on Intel and AMD CPUs
By [email protected] (The Hacker News)
AI Summary
MIT CSAIL researchers Danielël Trujillo and Mengjia Yan disclosed INTERRUPT INJECTION, a new technique that bypasses existing Spectre v2 defenses on Intel and AMD CPUs by timing a hardware interrupt to land in the window between branch predictor sanitization and kernel use, allowing re-poisoning after defenses have run. Demonstrated on AMD Zen 2 running Linux 6.14 with all default Spectre v2 mitigations enabled, the attack undermines assumptions that current kernel mitigations fully close the Spectre v2 attack surface.
Relevance score: 82.0/100
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