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RHEL 8 : kernel (RHSA-2020:5473)

low Nessus Plugin ID 144384

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Synopsis

The remote Red Hat host is missing a security update for kernel.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:5473 advisory.

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

 Security Fix(es):

 * kernel: information exposure in drivers/char/random.c and kernel/time/timer.c (CVE-2020-16166)

 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):

 * Backport upstream OVS performance patch fix (BZ#1879935)

 * Sleeping or scheduling after sched_cpu_dying() led to scheduling while atomic and BUG at kernel/cpu.c:907! (BZ#1880080)

 * [conntrack] udp packet reverse NAT occasionally fail when race condition request combination with the DNAT load balancing rules (BZ#1882094)

 * Unexpected fragmentation needed error, OpenShift 4, OVS, VXLAN, GSO, Azure (BZ#1885766)

 * Unable to attach VLAN-based logical networks to a bond (BZ#1886017)

 * NFS server with krb5p fails in FIPS mode: context_derive_keys_new: Error 22 deriving initiator_seal key (BZ#1886189)

 * XFS: reflinked file data corruption (BZ#1886895)

 * [HPE 8.3 Bug] Kdump bootup failure caused by an amd iommu commit for Rhel8.3 BetaOS on DL325Gen10 (BZ#1888113)

 * dm: fix bio splitting and its bio completion order for regular IO (BZ#1890233)

 * geneve: add transport ports in route lookup for geneve (BZ#1891818)

 * HRTICK not armed in specific cases with SCHED_DEADLINE (BZ#1894073)

 * PM/swap Speed up hibernation by batching requests (BZ#1894629)

 * RHEL8.1 - ibmveth is producing TX errors over VXLAN when large send (TSO) is enabled (-> related to Red Hat bug 1816254 - OCP 4.3 - Authentication clusteroperator is in unknown state on POWER 9 servers) (BZ#1896299)

 * RHEL8.2 - mm/gup: fix gup_fast with dynamic page table folding (BZ#1896351)

 * [Azure][RHEL-8]TX/RX packets stop increasing after hibernation/resume in VM with CX4 VF NIC (BZ#1896433)

 * [Azure][RHEL-8]VM hangs after hibernation/resume if the VM has SRIOV NIC and has been deallocated (BZ#1896434)

 * [Azure] hv_irq_unmask() failed: 0x5 after resume from hibernation in NV6 size (BZ#1896435)

 * block layer: update to upstream v5.8 (BZ#1896787)

 * [Regression] RHEL8.2 zstream - Undetected Data corruption in MPI workloads that use VSX for reductions on POWER9 DD2.1 systems (BZ#1897278)

 * Incorrect system time reported through the CPU Accounting statistics (BZ#1897716)

 * debug kernel reports BUG: sleeping function called from invalid context at mm/slab.h:496 in aws t4g instances (BZ#1898758)

 * ARO: excessive pod memory allocation causes node lockup (BZ#1901547)

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

Note that Nessus has not tested for this issue 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-2020:5473.

See Also

http://www.nessus.org/u?4b3c3b31

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

https://access.redhat.com/errata/RHSA-2020:5473

https://bugzilla.redhat.com/show_bug.cgi?id=1865751

Plugin Details

Severity: Low

ID: 144384

File Name: redhat-RHSA-2020-5473.nasl

Version: 1.10

Type: local

Agent: unix

Published: 12/18/2020

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 1.4

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2020-16166

CVSS v3

Risk Factor: Low

Base Score: 3.7

Temporal Score: 3.2

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

Temporal Vector: CVSS:3.0/E:U/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-core, 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, 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, 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-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 Ease: No known exploits are available

Patch Publication Date: 12/15/2020

Vulnerability Publication Date: 7/30/2020

Reference Information

CVE: CVE-2020-16166

CWE: 200

RHSA: 2020:5473