RHSA-2021:4650 — Security Advisory

An update for kernel is now available for Red Hat Enterprise Linux 8.4 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. 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.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: Insufficient validation of user-supplied sizes for the MSG_CRYPTO message type (CVE-2021-43267)

• kernel: timer tree corruption leads to missing wakeup and system freeze (CVE-2021-20317)

• kernel: fuse: stall on CPU can occur because a retry loop continually finds the same bad inode (CVE-2021-28950)

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):

• Fix repeated xhci wake after suspend due to uncleared internal wake state (BZ#2003789)

• CephFS mount points return "permission denied" (BZ#2017099)

Enhancement(s):

• Update qla2xxx driver to latest upstream (BZ#2014150)