RHEL 8 : kernel (RHSA-2022:5626)

high Nessus Plugin ID 163291

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Synopsis

The remote Red Hat host is missing one or more security updates for kernel.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:5626 advisory.

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

Security Fix(es):

* kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak (CVE-2022-1012)

* kernel: race condition in perf_event_open leads to privilege escalation (CVE-2022-1729)

* kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root (CVE-2022-32250)

* kernel: cgroup: Use open-time creds and namespace for migration perm checks (CVE-2021-4197)

* kernel: Race condition in races in sk_peer_pid and sk_peer_cred accesses (CVE-2021-4203)

* kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check (CVE-2020-29368)

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):

* Failed to reboot after crash trigger (BZ#2060747)

* conntrack entries linger around after test (BZ#2066357)

* Enable nested virtualization (BZ#2079070)

* slub corruption during LPM of hnv interface (BZ#2081251)

* sleeping function called from invalid context at kernel/locking/spinlock_rt.c:35 (BZ#2082091)

* Backport request of genirq: use rcu in kstat_irqs_usr() (BZ#2083309)

* ethtool -L may cause system to hang (BZ#2083323)

* For isolated CPUs (with nohz_full enabled for isolated CPUs) CPU utilization statistics are not getting reflected continuously (BZ#2084139)

* Affinity broken due to vector space exhaustion (BZ#2084647)

* kernel memory leak while freeing nested actions (BZ#2086597)

* sync rhel-8.6 with upstream 5.13 through 5.16 fixes and improvements (BZ#2088037)

* Kernel panic possibly when cleaning namespace on pod deletion (BZ#2089539)

* Softirq hrtimers are being placed on the per-CPU softirq clocks on isolcpus. (BZ#2090485)

* fix missed wake-ups in rq_qos_throttle try two (BZ#2092076)

* NFS4 client experiencing IO outages while sending duplicate SYNs and erroneous RSTs during connection reestablishment (BZ#2094334)

* using __this_cpu_read() in preemptible [00000000] code: kworker/u66:1/937154 (BZ#2095775)

* Need some changes in RHEL8.x kernels. (BZ#2096932)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL kernel package based on the guidance in RHSA-2022:5626.

Plugin Details

Severity: High

ID: 163291

File Name: redhat-RHSA-2022-5626.nasl

Version: 1.15

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 7/20/2022

Updated: 11/8/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.4

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2022-32250

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

CVSS Score Source: CVE-2022-1012

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel-debug-core, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-core, p-cpe:/a:redhat:enterprise_linux:kernel-cross-headers, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:bpftool, p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump, cpe:/o:redhat:rhel_eus:8.4, p-cpe:/a:redhat:enterprise_linux:kernel-debug-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-core, p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-modules, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-modules, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debug-modules, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:python3-perf

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/19/2022

Vulnerability Publication Date: 11/28/2020

Reference Information

CVE: CVE-2020-29368, CVE-2021-4197, CVE-2021-4203, CVE-2021-47435, CVE-2022-1012, CVE-2022-1729, CVE-2022-32250

CWE: 200, 287, 362, 366, 416, 476

RHSA: 2022:5626

Detections

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