The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade Amazon-Linux:2
perf
to version 0:4.14.33-59.34.amzn2 or higher.
This issue was patched in ALAS2-2018-994
.
Note: Versions mentioned in the description apply only to the upstream perf
package and not the perf
package as distributed by Amazon-Linux
.
See How to fix?
for Amazon-Linux:2
relevant fixed versions and status.
A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cpu variables. An attacker can use this to escalate their privileges.