RHSA-2021:3904 — Security Advisory
Red Hat Security Advisory: kernel security and bug fix update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · October 19, 2021
Updated · August 7, 2026
Topic
An update for kernel is now available for Red Hat Enterprise Linux 8.2 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
-
kernel: SVM nested virtualization issue in KVM (AVIC support) (CVE-2021-3653)
-
kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE) (CVE-2021-3656)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
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RHEL8.2 - s390/vtime: fix increased steal time accounting (BZ#1988387)
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Backport 22e4663e91 ("mm/slub: fix panic in slab_alloc_node()") (BZ#1996078)
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Kernel panic at n_tty_set_termios+0x30 (BZ#1998000)