Improper Initialization Affecting linux-qemu-6.18 package, versions <6.18.10-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (14th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-LINUXQEMU618-15043560
  • published21 Jan 2026
  • disclosed24 Aug 2022

Introduced: 24 Aug 2022

CVE-2021-4218  (opens in a new tab)
CWE-665  (opens in a new tab)

How to fix?

Upgrade Chainguard linux-qemu-6.18 to version 6.18.10-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-qemu-6.18 package and not the linux-qemu-6.18 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

A flaw was found in the Linux kernel’s implementation of reading the SVC RDMA counters. Reading the counter sysctl panics the system. This flaw allows a local attacker with local access to cause a denial of service while the system reboots. The issue is specific to CentOS/RHEL.

CVSS Base Scores

version 3.1