Jossy82
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Aus https://en.wikipedia.org/wiki/Retbleed:
Retbleed is a speculative execution attack on x86-64 processors, including some recent Intel and AMD chips.[1] First made public in 2022, it is a variant of the Spectre vulnerability which exploits retpoline, which was intended as a mitigation for speculative execution attacks.[2]
According to the researchers Retbleed mitigations require extensive changes to the system which results in up to 14% and 39% performance loss for affected AMD and Intel CPU respectively.[3] The PoC works against Intel Core 6th, 7th and 8th generation microarchitectures and AMD Zen 1, Zen 1+, and Zen 2 microarchitectures.
Wurde von der ETH Zürich entdeckt.
Hier noch weiterführende Links:
https://arstechnica.com/information...erable-to-a-new-speculative-execution-attack/
https://www.phoronix.com/scan.php?page=news_item&px=RETBLEED
Retbleed is a speculative execution attack on x86-64 processors, including some recent Intel and AMD chips.[1] First made public in 2022, it is a variant of the Spectre vulnerability which exploits retpoline, which was intended as a mitigation for speculative execution attacks.[2]
According to the researchers Retbleed mitigations require extensive changes to the system which results in up to 14% and 39% performance loss for affected AMD and Intel CPU respectively.[3] The PoC works against Intel Core 6th, 7th and 8th generation microarchitectures and AMD Zen 1, Zen 1+, and Zen 2 microarchitectures.
Wurde von der ETH Zürich entdeckt.
Hier noch weiterführende Links:
https://arstechnica.com/information...erable-to-a-new-speculative-execution-attack/
https://www.phoronix.com/scan.php?page=news_item&px=RETBLEED
