Information Exposure Affecting kernel-modules-extra package, versions *


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-CENTOS8-KERNELMODULESEXTRA-2387952
  • published29 Jan 2022
  • disclosed28 Jan 2022

Introduced: 28 Jan 2022

CVE-2021-4159  (opens in a new tab)
CWE-202  (opens in a new tab)
CWE-1230  (opens in a new tab)

How to fix?

There is no fixed version for Centos:8 kernel-modules-extra.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-modules-extra package and not the kernel-modules-extra package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

A vulnerability was found in the Linux kernel's EBPF verifier when handling internal data structures. Internal memory locations could be returned to userspace. A local attacker with the permissions to insert eBPF code to the kernel can use this to leak internal kernel memory details defeating some of the exploit mitigations in place for the kernel.

CVSS Scores

version 3.1