RHEL 8 : kernel (RHSA-2021:0765)

high Nessus Plugin ID 147207

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Synopsis

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

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0765 advisory.

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

Security Fix(es):

* kernel: bad kfree in auditfilter.c may lead to escalation of privilege (CVE-2020-0444)

* kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)

* kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661)

* kernel: performance counters race condition use-after-free (CVE-2020-14351)

* kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705)

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):

* RHEL8.1 - net/smc: fix silent data corruption in SMC (BZ#1882241)

* [mlx5] VF interface stats are not reflected in ip -s link show / ifconfig <vf> commands (BZ#1889301)

* [mlx5] IPV6 TOS rewrite flows are not getting offloaded in HW (BZ#1897689)

* RHEL 8.1 - Call traces show I/O stuck for more than 120 sec when at least one path is available for NVMe/IB (BZ#1901525)

* RHEL8: kernel-rt: kernel BUG at kernel/sched/deadline.c:1462! (BZ#1908732)

* [Hyper-V][RHEL-8] Request to included a commit that adds a timeout to vmbus_wait_for_unload (BZ#1913529)

* Host becomes unresponsive during stress-ng --cyclic test rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: (BZ#1913965)

* race condition when creating child sockets from syncookies (BZ#1915530)

* Missing mm backport to fix regression introduced by another mm backport (BZ#1915815)

* On System Z, a hash needs state randomized for entropy extraction (BZ#1915817)

* [Hyper-V][RHEL-8]video: hyperv_fb: Fix the cache type when mapping the VRAM Edit (BZ#1917712)

* kvm-rhel8.3 [AMD] - system crash observed while powering on virtual machine with attached VF interfaces.
(BZ#1919886)

* [CKI kernel builds]: x86 binaries in non-x86 kernel rpms breaks systemtap (BZ#1929909)

* rpmbuild cannot build the userspace RPMs in the kernel package when the kernel itself is not built (BZ#1929911)

Enhancement(s):

* [Mellanox 8.4 FEAT] mlx5: Add messages when VF-LAG fails to start (BZ#1892345)

* Add kernel option to change cpumask for kernel threads (BZ#1915344)

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 affected packages.

Plugin Details

Severity: High

ID: 147207

File Name: redhat-RHSA-2021-0765.nasl

Version: 1.14

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 3/9/2021

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-2020-29661

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-cross-headers, p-cpe:/a:redhat:enterprise_linux:kernel-core, cpe:/o:redhat:rhel_eus:8.2, 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, 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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/9/2021

Vulnerability Publication Date: 9/9/2020

Reference Information

CVE: CVE-2020-0444, CVE-2020-14351, CVE-2020-25211, CVE-2020-25705, CVE-2020-29661

CWE: 119, 244, 330, 416

RHSA: 2021:0765

Detections

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