RHEL 8 : kernel-rt (RHSA-2021:1739)

high Nessus Plugin ID 149660

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Synopsis

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

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:1739 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: Integer overflow in Intel(R) Graphics Drivers (CVE-2020-12362)

* kernel: use-after-free caused by a malicious USB device in the drivers/usb/misc/adutux.c driver (CVE-2019-19523)

* kernel: use-after-free bug caused by a malicious USB device in the drivers/usb/misc/iowarrior.c driver (CVE-2019-19528)

* kernel: possible out of bounds write in kbd_keycode of keyboard.c (CVE-2020-0431)

* kernel: DoS by corrupting mountpoint reference counter (CVE-2020-12114)

* kernel: use-after-free in usb_sg_cancel function in drivers/usb/core/message.c (CVE-2020-12464)

* kernel: buffer uses out of index in ext3/4 filesystem (CVE-2020-14314)

* kernel: Use After Free vulnerability in cgroup BPF component (CVE-2020-14356)

* kernel: NULL pointer dereference in serial8250_isa_init_ports function in drivers/tty/serial/8250/8250_core.c (CVE-2020-15437)

* kernel: umask not applied on filesystem without ACL support (CVE-2020-24394)

* kernel: TOCTOU mismatch in the NFS client code (CVE-2020-25212)

* kernel: incomplete permission checking for access to rbd devices (CVE-2020-25284)

* kernel: race condition between hugetlb sysctl handlers in mm/hugetlb.c (CVE-2020-25285)

* kernel: improper input validation in ppp_cp_parse_cr function leads to memory corruption and read overflow (CVE-2020-25643)

* kernel: perf_event_parse_addr_filter memory (CVE-2020-25704)

* kernel: use-after-free in kernel midi subsystem (CVE-2020-27786)

* kernel: child process is able to access parent mm through hfi dev file handle (CVE-2020-27835)

* kernel: slab-out-of-bounds read in fbcon (CVE-2020-28974)

* kernel: fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent (CVE-2020-35508)

* kernel: use after free in tun_get_user of tun.c could lead to local escalation of privilege (CVE-2021-0342)

* kernel: NULL pointer dereferences in ov511_mode_init_regs and ov518_mode_init_regs in drivers/media/usb/gspca/ov519.c (CVE-2020-11608)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.

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-rt package based on the guidance in RHSA-2021:1739.

Plugin Details

Severity: High

ID: 149660

File Name: redhat-RHSA-2021-1739.nasl

Version: 1.11

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 5/19/2021

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: High

Score: 8.4

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2020-25643

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

CVSS Score Source: CVE-2020-27786

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules

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: 5/18/2021

Vulnerability Publication Date: 11/13/2019

Reference Information

CVE: CVE-2019-19523, CVE-2019-19528, CVE-2020-0431, CVE-2020-11608, CVE-2020-12114, CVE-2020-12362, CVE-2020-12363, CVE-2020-12364, CVE-2020-12464, CVE-2020-14314, CVE-2020-14356, CVE-2020-15437, CVE-2020-24394, CVE-2020-25212, CVE-2020-25284, CVE-2020-25285, CVE-2020-25643, CVE-2020-25704, CVE-2020-27786, CVE-2020-27835, CVE-2020-28974, CVE-2020-35508, CVE-2020-36694, CVE-2021-0342, CVE-2021-0605, CVE-2021-3428, CVE-2023-1390

CWE: 1050, 119, 125, 190, 20, 284, 362, 367, 400, 401, 416, 476, 665, 732

RHSA: 2021:1739

Detections

Analytics

RHEL 8 : kernel-rt (RHSA-2021:1739)

high Nessus Plugin ID 149660

Synopsis

Description

Solution

See Also

Plugin Details

Risk Information

VPR

Vendor

CVSS v2

CVSS v3

Vulnerability Information

Reference Information