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

high Nessus Plugin ID 149660

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.

See Also

https://bugzilla.redhat.com/show_bug.cgi?id=1894793

http://www.nessus.org/u?862005a9

http://www.nessus.org/u?a2c8e558

https://access.redhat.com/errata/RHSA-2021:1739

https://bugzilla.redhat.com/show_bug.cgi?id=1783434

https://bugzilla.redhat.com/show_bug.cgi?id=1783507

https://bugzilla.redhat.com/show_bug.cgi?id=1831726

https://bugzilla.redhat.com/show_bug.cgi?id=1833445

https://bugzilla.redhat.com/show_bug.cgi?id=1848652

https://bugzilla.redhat.com/show_bug.cgi?id=1853922

https://bugzilla.redhat.com/show_bug.cgi?id=1868453

https://bugzilla.redhat.com/show_bug.cgi?id=1869141

https://bugzilla.redhat.com/show_bug.cgi?id=1877575

https://bugzilla.redhat.com/show_bug.cgi?id=1879981

https://bugzilla.redhat.com/show_bug.cgi?id=1882591

https://bugzilla.redhat.com/show_bug.cgi?id=1882594

https://bugzilla.redhat.com/show_bug.cgi?id=1886109

https://bugzilla.redhat.com/show_bug.cgi?id=1901709

https://bugzilla.redhat.com/show_bug.cgi?id=1902724

https://bugzilla.redhat.com/show_bug.cgi?id=1903126

https://bugzilla.redhat.com/show_bug.cgi?id=1915799

https://bugzilla.redhat.com/show_bug.cgi?id=1919889

https://bugzilla.redhat.com/show_bug.cgi?id=1930246

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

https://bugzilla.redhat.com/show_bug.cgi?id=1895961

https://bugzilla.redhat.com/show_bug.cgi?id=1896842

https://bugzilla.redhat.com/show_bug.cgi?id=1897869

https://bugzilla.redhat.com/show_bug.cgi?id=1900933

https://bugzilla.redhat.com/show_bug.cgi?id=1901161

Plugin Details

Severity: High

ID: 149660

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

Version: 1.11

Type: local

Agent: unix

Published: 5/19/2021

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: 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