Integer Overflow or Wraparound Affecting kernel-tools package, versions <0:4.14.252-195.481.amzn2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-AMZN2-KERNELTOOLS-1911193
  • published5 Nov 2021
  • disclosed2 Oct 2021

Introduced: 2 Oct 2021

CVE-2021-41864  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel-tools to version 0:4.14.252-195.481.amzn2 or higher.
This issue was patched in ALAS2-2021-1719.

NVD Description

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

prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.

CVSS Scores

version 3.1