Race Condition Affecting perf-debuginfo package, versions <0:4.14.192-147.314.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (22nd percentile)

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  • Snyk IDSNYK-AMZN2-PERFDEBUGINFO-1683371
  • published27 Sept 2021
  • disclosed31 Jan 2020

Introduced: 31 Jan 2020

CVE-2019-3016  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 perf-debuginfo to version 0:4.14.192-147.314.amzn2 or higher.
This issue was patched in ALAS2-2020-1480.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf-debuginfo package and not the perf-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

In a Linux KVM guest that has PV TLB enabled, a process in the guest kernel may be able to read memory locations from another process in the same guest. This problem is limit to the host running linux kernel 4.10 with a guest running linux kernel 4.16 or later. The problem mainly affects AMD processors but Intel CPUs cannot be ruled out.

CVSS Scores

version 3.1