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Red Hat Enterprise Linux 8.4 RHSA-2022:0777-01 Important: Kernel Bug Fix

red hat
Calendar Grey March 8, 2022
Dist Redhat Esm H88
A crucial security patch for Ubuntu Server 20.04 to tackle kernel weaknesses and improve overall system protection.
An update for kernel is now available for Red Hat Enterprise Linux 8.4 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: 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: possible privileges escalation due to missing TLB flush (CVE-2022-0330)
* kernel: remote stack overflow via kernel panic on systems using TIPC may lead to DoS (CVE-2022-0435)
* kernel: missing check in ioctl allows kernel memory read/write (CVE-2022-0516)
* kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)
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):
* Intel QAT Kernel power up fix (BZ#2016436)
* RHEL8: DFS provided SMB shares are not accessible following unprivileged access (BZ#2017176)
* xfs: I_DONTCACHE flag is ignored [xfstests: xfs/177] (BZ#2028533)
* spec: Support separate tools build (BZ#2031052)
* block: update to upstream v5.14 (BZ#2034395)
* Double free of kmalloc-64 cache struct ib_port->pkey_group from module ib_core . (BZ#2038723)
* RHEL8 - kvm: floating interrupts may get stuck (BZ#2040768)
* Data corruption on small files served by httpd, which is backed by cifs-mount (BZ#2041528)
* Add a net/mlx5 patch for Hardware Offload Fix (BZ#2042662)
* DNS lookup failures when run two times in a row (BZ#2043547)
* net/sched: Fix ct zone matching for invalid conntrack state (BZ#2043549)
* Windows guest random Bsod when 'hv-tlbflush' enlightenment is enabled (BZ#2048342)
* OCP node XFS metadata corruption after numerous reboots (BZ#2049291)
* ice: bug fix series for 8.6 (BZ#2051950)
* SNO 4.9: NO-CARRIER on pod interface using VF on intel E810-C NIC; IAVF_ERR_ADMIN_QUEUE_ERROR (BZ#2052984)
* ceph omnibus backport for RHEL-8.6.0 (BZ#2053724)
* SCTP peel-off with SELinux and containers in OCP (BZ#2054111)
* Selinux is not allowing SCTP connection setup between inter pod communication in enforcing mode (BZ#2054116)
Enhancement(s):
* [Mellanox 8.5 FEAT] mlx5: drivers update upto Linux v5.12 [8.4.0.z] (BZ#2037730)
* [MCHP 8.5 FEAT] Update smartpqi driver to latest upstream [None8.4.0.z] (BZ#2042498)

Topics%20covered

Topics Covered

security advisory privilege escalation bug fix DoS kernel Red Hat Enterprise

References

https://access.redhat.com/security/cve/CVE-2021-0920 https://access.redhat.com/security/cve/CVE-2021-4028 https://access.redhat.com/security/cve/CVE-2022-0330 https://access.redhat.com/security/cve/CVE-2022-0435 https://access.redhat.com/security/cve/CVE-2022-0516 https://access.redhat.com/security/cve/CVE-2022-22942 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS EUS (v.8.4):
Source: kernel-4.18.0-305.40.1.el8_4.src.rpm
aarch64: bpftool-4.18.0-305.40.1.el8_4.aarch64.rpm bpftool-debuginfo-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-core-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-cross-headers-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-debug-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-debug-core-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-debug-debuginfo-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-debug-devel-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-debug-modules-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-debug-modules-extra-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-debuginfo-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-devel-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-headers-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-modules-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-modules-extra-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-tools-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-tools-debuginfo-4.18.0-305.40.1.el8_4.aarch64.rpm kernel-tools-libs-4.18.0-305.40.1.el8_4.aarch64.rpm perf-4.18.0-305.40.1.el8_4.aarch64.rpm perf-debuginfo-4.18.0-305.40.1.el8_4.aarch64.rpm python3-perf-4.18.0-305.40.1.el8_4.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:0777-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:0777
Issue date: 2022-03-08

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.4Extended 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 privilege escalation bug fix DoS kernel Red Hat Enterprise

Relevant Releases Architectures

Red Hat CodeReady Linux Builder EUS (v. 8.4) - aarch64, ppc64le, x86_64

Red Hat Enterprise Linux BaseOS EUS (v.8.4) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

2027201 - CVE-2021-4028 kernel: use-after-free in RDMA listen()

2031930 - CVE-2021-0920 kernel: Use After Free in unix_gc() which could result in a local privilege escalation

2042404 - CVE-2022-0330 kernel: possible privileges escalation due to missing TLB flush

2044809 - CVE-2022-22942 kernel: failing usercopy allows for use-after-free exploitation

2048738 - CVE-2022-0435 kernel: remote stack overflow via kernel panic on systems using TIPC may lead to DoS

2050237 - CVE-2022-0516 kernel: missing check in ioctl allows kernel memory read/write

2052984 - SNO 4.9: NO-CARRIER on pod interface using VF on intel E810-C NIC; IAVF_ERR_ADMIN_QUEUE_ERROR [rhel-8.4.0.z]

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