Improper Locking Affecting kernel-livepatch-4.14.186-146.268 package, versions <0:1.0-0.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.52% (40th percentile)

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  • Snyk IDSNYK-AMZN2-KERNELLIVEPATCH414186146268-1682524
  • published27 Sept 2021
  • disclosed9 May 2020

Introduced: 9 May 2020

CVE-2020-12771  (opens in a new tab)
CWE-667  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel-livepatch-4.14.186-146.268 to version 0:1.0-0.amzn2 or higher.
This issue was patched in ALAS2-2020-1465.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-4.14.186-146.268 package and not the kernel-livepatch-4.14.186-146.268 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

An issue was discovered in the Linux kernel through 5.6.11. btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlock if a coalescing operation fails.

CVSS Base Scores

version 3.1