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Modern CPUs have speculative execution capabilities, which improves processor performance. Depending on the design and architecture of the CPU, speculative execution can introduce side-channel-attack vulnerabilities.

Known Vulnerabilities

5754Meltdown5715 V2
https://www.amd.com/en/corporate/security-updates
https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability

CVEAliases	Alias(es)	CPUs Affected	Speculative Trigger	Impact	Mitigations	References
CVE-2017-	5753	Spectre V1	Intel	Out-of-order execution	Kernel memory disclosure to userspace	ARM	Branch prediction bounds check bypass	Cross- and intra-process (including kernel) memory disclosure	OS Compiler BrowserOS	https://www.kb.cert.org/vuls/id/584653 https://www.intel.com/content/www/us/en/architecture-and-technology/facts-about-side-channel-analysis-and-intel-products.html https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability
CVE-2017-57535715	Spectre V1V2	Intel AMD ARM	Branch prediction bounds check bypasstarget injection	Cross- and intra-process (including kernel) memory disclosure	OSMicrocodeCompiler Browser	https://www.kb.cert.org/vuls/id/584653 https://www.intel.com/content/www/us/en/architecture-and-technology/facts-about-side-channel-analysis-and-intel-products.html https://www.amd.com/en/corporate/security-updates https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability
CVE-2017-	5754	Meltdown Spectre	V3	IntelAMD ARM	Branch target injection	Cross- and intra-process (including kernel) memory disclosure	Out-of-order execution	Kernel memory disclosure to userspace	OSMicrocode	https://www.kb.cert.org/vuls/id/584653 https://www.intel.com/content/www/us/en/architecture-and-technology/facts-about-side-channel-analysis-and-intel-products.html
CVE-2018-3640	Spectre V3a (RSRE)	Intel ARM	System register read	Cross- and intra-process (including kernel) memory disclosure	Microcode	https://www.kb.cert.org/vuls/id/180049 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00115.html https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability
CVE-2018-3639	Spectre V4 (SSB)	Intel AMD ARM	Memory reads before prior memory write addresses known	Cross- and intra-process (including kernel) memory disclosure	OS Microcode	https://www.kb.cert.org/vuls/id/180049 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00115.html https://www.amd.com/en/corporate/security-updates https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability
CVE-2018-3665	Lazy FP	Intel	Lazy FPU state restore	Leak of FPU state	OS	https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00145.html

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Known Vulnerabilities