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Red Hat Enterprise Linux 8.6 RHSA-2023:4130-01 Important Kernel Fixes

red hat
Calendar Grey July 18, 2023
Dist Redhat Esm H88
Red Hat has issued a critical security and bug fix update for Red Hat Enterprise Linux 8.6 Extended Update Support, underscoring its importance.
An update for kernel is now available for Red Hat Enterprise Linux 8.6 Extended Update Support

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: tcindex: use-after-free vulnerability in traffic control index filter allows privilege escalation (CVE-2023-1281)
* kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233)
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):
* RHEL8.4 - s390/smp,vdso: fix ASCE handling (BZ#2176464)
* After powerstore LUNs are mapped, OS crashed and host reboot. (BZ#2179068)
* qla2xxx NVMe-FC: WARNING: CPU: 0 PID: 124072 at drivers/scsi/qla2xxx/qla_init.c:70 qla2xxx_rel_done_warning+0x25/0x30 [qla2xxx] (BZ#2181529)
* iscsi target deadlocks when the same host acts as an initiator to itself (i.e. connects via 127.0.0.1) (BZ#2182095)
* Dying percpu kworkers cause issues on isolated CPUs [rhel-8] (BZ#2189597)
* Azure RHEL8: Live resize of disk does not trigger a rescan of the device capacity (BZ#2192345)
* RHEL8.4 - kernel: fix __clear_user() inline assembly constraints (BZ#2192604)
* RHEL8.6, lockd : oops on nlmsvc_mark_host (BZ#2196386)
* xfs: deadlock in xfs_btree_split_worker (BZ#2196392)
* Intel E810 card unable to create a MACVLAN on interface already configured as SRIOV (BZ#2203217)
* ice: ptp4l cpu usage spikes (BZ#2203287)
* Kernel - Significant performance drop for getrandom system call when FIPS is enabled (compared to RHEL 8.x for all x < 6.z) (BZ#2208130)
* Azure RHEL8: CVM patch list requirement-storvsc patch (BZ#2208601)
* BUG_ON "kernel BUG at mm/rmap.c:1041!" in __page_set_anon_rmap() when vma->anon_vma==NULL (BZ#2211661)
* RHEL 8.6 opening console with mkvterm on novalink terminal fails due to drmgr reporting failure (L3:) (BZ#2212374)
* ESXi RHEL8: Haswell generation CPU are impacted with performance due to IBRS (BZ#2213367)
* Hyper-V RHEL-8: Fix VM crash/hang Issues due to fast VF add/remove events (BZ#2216544)

Topics%20covered

Topics Covered

security advisory kernel update privilege escalation bug fix Red Hat Enterprise Linux kernel fix important advisory

References

https://access.redhat.com/security/cve/CVE-2023-1281 https://access.redhat.com/security/cve/CVE-2023-32233 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS EUS (v.8.6):
Source: kernel-4.18.0-372.64.1.el8_6.src.rpm
aarch64: bpftool-4.18.0-372.64.1.el8_6.aarch64.rpm bpftool-debuginfo-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-core-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-cross-headers-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-debug-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-debug-core-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-debug-debuginfo-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-debug-devel-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-debug-modules-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-debug-modules-extra-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-debuginfo-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-devel-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-headers-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-modules-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-modules-extra-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-tools-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-tools-debuginfo-4.18.0-372.64.1.el8_6.aarch64.rpm kernel-tools-libs-4.18.0-372.64.1.el8_6.aarch64.rpm perf-4.18.0-372.64.1.el8_6.aarch64.rpm perf-debuginfo-4.18.0-372.64.1.el8_6.aarch64.rpm python3-perf-4.18.0-372.64.1.el8_6.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:4130-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:4130
Issue date: 2023-07-18

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.6Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory kernel update privilege escalation bug fix Red Hat Enterprise Linux kernel fix important advisory

Relevant Releases Architectures

Red Hat CodeReady Linux Builder EUS (v.8.6) - aarch64, ppc64le, x86_64

Red Hat Enterprise Linux BaseOS EUS (v.8.6) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

2181847 - CVE-2023-1281 kernel: tcindex: use-after-free vulnerability in traffic control index filter allows privilege escalation

2196105 - CVE-2023-32233 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation

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