Microsoft released the microcode patches with Windows updates at the time so I would think the same will be the case with these new side channel issues. I have on laptop and one gaming rig, both CPU's are on the listing as they were when the original Spectre issues were reported. Again, developers will be the targets for abuses and the way they code containers with their software and how it runs against security in Windows and Linux. CVE-2202-0001, CVE-2022-002 represent the MITRE assignments for those yet to be released patches. Disabling CPU "privileged mode" has to be done through new microcode patches per each specific OEM which they should provide. Both AMD and Intel, are susceptible to the new issues. The "microcode" patches released for the former Spectre earlier were better suited by AMD in preventing performance losses and now confirmed, as not closing the door to Spectre in the first instance. The current report IS contradictory indeed. The usage of the hardware won't make any difference since its the same hardware with the same issues. The processors affected in BOTH Intel and AMD listing would be related to everyday users and enterprise in the same manner. BHI-affected processors is the reference to the NEW Spectre vulnerability and the proof of concepts that are already known but not yet seen in the wild. ![]() The good news is that this Phoronix article shows that using the "generic" Retpoline mitigation to patch AMD processors against this old Spectre-V2 vulnerability generally has less impact on system performance than it has on Intel processors.Ĭonfusing this indeed is, as was the first round. However, Phoronix also discovered that AMD's strategy for the old Spectre-V2 vulnerability (i.e., "AMD/LFENCE" Retopline) was inadequate, and advised that systems with an ADM processor should switch to the "generic" Retpoline approach used by Intel since Win 10 v1809. What I took from that Phoronix article is that while researchers were testing AMD processors they found that the AMD processors were not susceptible to the new Spectre-BHI/BHB vulnerabilites (which is what UVSec also reported but which seems to contradict the information in the 0 BleepingComputer article Intel, AMD, Arm Warn of New Speculative Execution CPU Bugs you referenced in your original post). The article you referenced is based on the 1 Phoronix article The Performance Impact Of AMD Changing Their Retpoline Method For Spectre V2. ![]() My computer has an Intel processor, but I'm a bit confused about the current status for AMD processors.Īm I correct that this is a backported AMD patch for the old Spectre Variant 2 vulnerability (Spectre-V2 / CVE-2017-5715) and not the new Spectre-BHI/BHB vulnerabilities (CVE-2202-0001, CVE-2022-002) that were made public last week ? 2) that checks for Spectre and Meltdown patches will eventually be updated for this new Spectre-BHI/BHB variant.ĭell Inspi* Intel i5-8265U CPU * 64-bit Win 10 Pro v21H2 build 19044.1586 * Microsoft Defender v.10-0.3 * Malwarebytes Premium v4.5.5.175-ĪMD releases new Spectre v2 vulnerabilities. I'm hoping that the Gibson Research Corporation (GRC) InSpectre v8 utility (rel. Have you seen any announcements on whether chipmakers and/or vendors like Microsoft plan to release software/firmware updates to mitigate these new Spectre-BHI/BHB (Branch History Injection / Brand History Buffer) vulnerabilities for home consumers (e.g., like Microsoft's "generic" Retpoline Spectre- Spectre V2 software mitigation described in the 1 BleepingComputer article Windows 10 Spectre 2 Mitigation Now Uses Retpoline By Default)? However, the "Mitigations" section of Intel's Security Advisory Branch History Injection and Intra-mode Branch Target Injection / CVE-2022-0001, CVE-2022-0002 / INTEL-SA-00598 is filled with technical jargon (" On BHI-affected processors, Intel recommends disabling unprivileged eBPF, enabling eIBRS and enabling SMEP.) and seems to be directed at network server administrators rather than typical home consumers. Regarding the new Spectre-BHI/BHB vulnerability (an offshoot of the older Spectre -V2 / CVE-2017-5715 vulnerability) that was made public last week, I confirmed that my Intel i5-8265U CPU is listed on the 2022 tab of Intel's Affected Processors table.
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