[image] Intel DOWNFALL: New Vulnerability Affecting AVX2/AVX-512 With Big Performance... This Patch Tuesday brings a new and potentially painful processor speculative execution vulnerability... [Honka_old-128px-14]

[image] Intel 20230808 Microcode Published For DOWNFALL, Other Security &... In addition to the Linux kernel patches for GDS/Downfall for reporting the mitigated state and handling around Intel's latest speculative execution vulnerability, the updated CPU microcode has now been published…

I’m running a Skylake i7-6700k 4Ghz processor from 2015, at some point I’d like to build one last rig next year before arthritis completely takes dexterity from my hands. Having switched to an 6700XT GPU, here’s hoping AMD has something that’s relatively resilient to modern vulnerabilities in the CP…

[image] AMD "INCEPTION" vulnerability on EPYC and Ryzen CPU ( Zen 3, Zen 4) EndeavourOS pub AMD has received an external report titled ‘INCEPTION’, describing a new speculative side channel attack. AMD believes ‘Inception’ is only potentially exploitable locally, such as v…

[image] Six New Stable Linux Kernel Updates For Intel DOWNFALL & AMD INCEPTION As a result of the AMD INCEPTION and Intel DOWNFALL speculative execution vulnerabilities published this Patch Tuesday, Linux 6.5 Git quickly picked up the patches on embargo expiration and now there are six n…

[image] Canoe: here’s hoping AMD has something that’s relatively resilient to modern vulnerabilities in the CPU space Earlier in today’s news: AMD “INCEPTION” CPU Vulnerability Disclosed :person_shrugging:

POC: [Inception: leaking the root hash from /etc/shadow on AMD Zen 4]

My CPU is old enough it doesn’t use AVX2 or AVX512 instructions. :sweat_smile:

[image] Initial Benchmarks Of The Intel Downfall Mitigation Performance Impact With yesterday's disclosure of the Intel Downfall speculative execution vulnerability and the updated CPU microcode and Linux kernel patches I have been very busy testing the performance impact of this mitigat…

Things changed with this kernel ? ▶ $ grep . -r /sys/devices/system/cpu/vulnerabilities/ Linux eos 6.4.9-arch1-1 #1 SMP PREEMPT_DYNAMIC Tue, 08 Aug 2023 22:14:05 +0000 x86_64 GNU/Linux commit acdc883eb61efbe01b954e782e1124790bd391a8 Author: Borislav Petkov (AMD) bp@alien8.de Date: Wed Jun 28 11…

Intel DOWNFALL: vulnerability affecting AVX2 / AVX-512 with big performance implications

Lounge Linux lounge

keybreak August 8, 2023, 6:39pm 2