RHSA-2023:1221 — 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.

The following packages have been upgraded to a later upstream version: kernel (4.18.0). (BZ#2165648)

Security Fix(es):

• kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564)

• kernel: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378)

• kernel: net: CPU soft lockup in TC mirred egress-to-ingress action (CVE-2022-4269)

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):

• RHEL 8.7 - Outputs of lsmem, lparstat, numactl and /proc/meminfo show wrong value of memory when LMB size is set to 4GB. (BZ#2140092)

• RHEL8.4 - boot: Add secure boot trailer (BZ#2151532)

• Concurrent reading of /proc/cpuinfo by multiple tasks causes soft lockup (BZ#2154441)

• GSS: OCP 4.10.30 node crash after ODF upgrade : unable to handle kernel NULL pointer dereference at 0000000000000000 : ceph_get_snap_realm+0x68/0xa0 [ceph] (BZ#2155799)

• cgroup: Backport cgroup_mutex performance patches (BZ#2160165)

• Redhat OpenShift: Error downloading big ZIP files inside pod on power OCP and pod getting restarted (BZ#2160223)

• i40e/iavf: VF reset task fails "Never saw reset" with 5 second timeout per VF (BZ#2160462)

• panic in fib6_rule_suppress+0x22 with custom xdp prog involved in (BZ#2167606)