CVE-2021-47377

kernel: xen/balloon: use a kernel thread instead a workqueue

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Severity

Low

Red Hat Product Security

CVSS 3.1

Review impact separately from score.

Published · May 21, 2024

Updated · October 21, 2026

Description

[REJECTED CVE] In the Linux kernel, the following vulnerability has been resolved:

xen/balloon: use a kernel thread instead a workqueue

The Linux kernel CVE team has assigned CVE-2021-47377 to this issue.

Statement

This CVE has been rejected at upstream: https://lore.kernel.org/linux-cve-announce/2024052823-REJECTED-cc32@gregkh/T/#u

Also, Xen ballooning driver is disabled in both Red Hat Enterprise Linux 8 and Red Hat Enterprise Linux 9:

# CONFIG_XEN_BALLOON is not set

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 0
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N

CWE-770 · Allocation of Resources Without Limits or Throttling