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RHEL 8 : kernel (RHSA-2021:3447)

high Nessus Plugin ID 153104

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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-2021:3447 advisory.

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

 Security Fix(es):

 * kernel: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-37576)

 * kernel: slab-out-of-bounds access in xdr_set_page_base() in net/sunrpc/xdr.c (CVE-2021-38201)

 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):

 * Update Broadcom Emulex lpfc driver for RHEL8.5 with bug fixes (BZ#1948608)

 * cyclictest shows >50us latency when guest enters idle (RT guest with 18 RT vCPUs) (BZ#1981336)

 * xfrm: backports from upstream (BZ#1981840)

 * A task is stuck waiting for the completion of the vmci_resouce releasing upon the balloon reset.
 (BZ#1982042)

 * [mlx5] backport driver bits of net: zero-initialize tc skb extension on allocation (BZ#1982220)

 * Kernel cannot kill a process doing compaction for hugepage allocation (BZ#1984085)

 * RHEL8.4 Nightly[0108] - [P10] [Regression] Kdump failed on RHEL8.4 on SAN disk via flavafish adapter (qla2xxx/HPT/Radix) (BZ#1986156)

 * [RHEL8.5] scheduler updates and fixes (BZ#1987296)

 * RHEL 8.3 using FCOE via a FastLinQ QL45000 card will not manually scan in LUN from Target_id's over 8 (BZ#1989097)

 * fixes for oopses in security mitigation runtime code patching (BZ#1989174)

 * act mirred doesn't scrub packets when sending them to ingress (BZ#1992226)

 * HPE: Cannot install 8.4 using the DVD presented to the iLO (BZ#1993894)

 * NFS client hangs on share listing when server side readdir verifiers are implemented (BZ#1993895)

 * SNO: The load is extremely high (~870) when pao is added and a profile is applied. (BZ#1994879)

 * timeout value of conntrack entry with TCP ESTABLISHED status is too short (BZ#1995554)

 * Increase the default value for flowtable offload timeouts (BZ#1995555)

 * ice/iavf driver stop responding (BZ#1997534)

 * [FJ8.4 Bug]: [REG] Some files in /proc/sys/user show wrong data (BZ#1998002)

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-2021:3447.

See Also

http://www.nessus.org/u?2f4af3a3

https://access.redhat.com/security/updates/classification/#important

https://access.redhat.com/errata/RHSA-2021:3447

https://bugzilla.redhat.com/show_bug.cgi?id=1986506

https://bugzilla.redhat.com/show_bug.cgi?id=1992731

Plugin Details

Severity: High

ID: 153104

File Name: redhat-RHSA-2021-3447.nasl

Version: 1.10

Type: local

Agent: unix

Published: 9/8/2021

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2021-37576

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

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-devel, p-cpe:/a:redhat:enterprise_linux:kernel-zfcpdump-core, p-cpe:/a:redhat:enterprise_linux:kernel, cpe:/o:redhat:enterprise_linux:8, 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-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-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-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: 9/7/2021

Vulnerability Publication Date: 7/26/2021

Reference Information

CVE: CVE-2021-37576, CVE-2021-38201

CWE: 119

RHSA: 2021:3447