RHEL 8 : kernel-rt (RHSA-2020:1567)

critical Nessus Plugin ID 136116

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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-2020:1567 advisory.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

* kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)

* kernel: nfs: NULL pointer dereference due to an anomalized NFS message sequence (CVE-2018-16871)

* kernel: memory leak in the kernel_read_file function in fs/exec.c allows to cause a denial of service (CVE-2019-8980)

* kernel: unprivileged users able to create RAW sockets in AF_IEEE802154 network protocol.
(CVE-2019-17053)

* kernel: unprivileged users able to create RAW sockets in AF_ISDN network protocol. (CVE-2019-17055)

* kernel: integer overflow in tcp_ack_update_rtt in net/ipv4/tcp_input.c (CVE-2019-18805)

* kernel: information leak bug caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_core.c driver (CVE-2019-19534)

* kernel: some ipv6 protocols not encrypted over ipsec tunnel. (CVE-2020-1749)

* Kernel: net: using kernel space address bits to derive IP ID may potentially break KASLR (CVE-2019-10639)

* kernel: An out-of-bounds read in drivers/scsi/qedi/qedi_dbg.c leading to crash or information disclosure (CVE-2019-15090)

* kernel: a NULL pointer dereference in drivers/net/wireless/ath/ath10k/usb.c leads to a crash (CVE-2019-15099)

* kernel: Null pointer dereference in the sound/usb/line6/pcm.c (CVE-2019-15221)

* kernel: Two memory leaks in the mwifiex_pcie_init_evt_ring() function in drivers/net/wireless/marvell/mwifiex/pcie.c allows for a DoS (CVE-2019-19057)

* kernel: Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c in the Linux kernel (DOS) (CVE-2019-19073)

* kernel: a memory leak in the ath9k management function in allows local DoS (CVE-2019-19074)

* kernel: when cpu.cfs_quota_us is used allows attackers to cause a denial of service against non-cpu- bound applications (CVE-2019-19922)

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):

* RT: update RT source tree to the RHEL-8.2 tree (BZ#1708716)

* KVM-RT guest fails boot with emulatorsched (BZ#1712781)

* 8 vCPU guest need max latency < 20 us with stress [RT-8.2] (BZ#1757165)

* Request nx_huge_pages=N as default value to avoid kvm-rt guest large latency spike [rt-8] (BZ#1788352)

* RT: Add rpm Provide of 'kernel' to indicate that this is a kernel package (BZ#1796284)

* [RHEL8] RT kernel signed by test certificate and not Red Hat Secure Boot (BZ#1806871)

Enhancement(s):

* update to the upstream 5.x RT patchset (BZ#1680161)

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: Critical

ID: 136116

File Name: redhat-RHSA-2020-1567.nasl

Version: 1.10

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 4/29/2020

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2019-18805

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules, p-cpe:/a:redhat:enterprise_linux:kernel-rt-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules-extra, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel

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: 4/28/2020

Vulnerability Publication Date: 11/30/2018

Reference Information

CVE: CVE-2018-16871, CVE-2019-10639, CVE-2019-12819, CVE-2019-15090, CVE-2019-15099, CVE-2019-15221, CVE-2019-15223, CVE-2019-16234, CVE-2019-17053, CVE-2019-17055, CVE-2019-18282, CVE-2019-18805, CVE-2019-19045, CVE-2019-19047, CVE-2019-19055, CVE-2019-19057, CVE-2019-19058, CVE-2019-19059, CVE-2019-19065, CVE-2019-19067, CVE-2019-19073, CVE-2019-19074, CVE-2019-19077, CVE-2019-19532, CVE-2019-19534, CVE-2019-19768, CVE-2019-19922, CVE-2019-5108, CVE-2019-8980, CVE-2020-10690, CVE-2020-1749, CVE-2020-7053, CVE-2021-33630

BID: 107120, 108547, 108768

CWE: 119, 125, 190, 20, 200, 250, 319, 400, 416, 440, 476

RHSA: 2020:1567

Detections

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