RHSA-2022:0636 — Security Advisory

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 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: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)

• kernel: use-after-free in RDMA listen() (CVE-2021-4028)

• kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)

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):

• bpf: update to v5.7 (BZ#2019883)

• Backport leftover migrate_disable BPF related change (BZ#2027687)

• assuming atomic context at include/linux/filter.h:597 (BZ#2043427)