Speculative Execution Vulnerabilities of 2018
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In January of 2018, news of three speculative execution vulnerabilities was made public.
| CVE | Group |
|---|---|
| CVE-2017-5715 | Spectre |
| CVE-2017-5753 | Spectre |
| CVE-2017-5754 | Meltdown |
At this time we know that POWER9, POWER8, POWER8E, POWER7+, POWER6, and certain PowerPC architectures are affected by at least some of these vulnerabilities. [1][2][3][4]
CVE-2017-5754 (Meltdown)
POWER7, POWER8, and POWER9 are patched from CVE-2017-5754 by purging the L1 cache when context switching to a less privileged process, as the vulnerability on these architectures affects L1 but not L2 cache.[5]
External Links
References
- ↑ IBM PSIRT Blog post, Potential Impact on Processors in the POWER family
- ↑ TenFourFox Development blog post, Actual field testing of Spectre on various Power Macs
- ↑ Raptor Engineering GNU Social notices about POWER8 and POWER9 vulnerability
- ↑ Red Hat security page for Kernel Side-Channel Attacks
- ↑ Larabel, Michael. PowerPC Memory Protection Keys In For Linux 4.16, Power Has Meltdown Mitigation In 4.15. 2018-01-22
