RHEL 7 : kernel (RHSA-2021:2314)

high Nessus Plugin ID 150379
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:2314 advisory.

- kernel: Integer overflow in Intel(R) Graphics Drivers (CVE-2020-12362)

- kernel: Improper input validation in some Intel(R) Graphics Drivers (CVE-2020-12363)

- kernel: Null pointer dereference in some Intel(R) Graphics Drivers (CVE-2020-12364)

- kernel: Speculation on pointer arithmetic against bpf_context pointer (CVE-2020-27170)

- kernel: use-after-free in n_tty_receive_buf_common function in drivers/tty/n_tty.c (CVE-2020-8648)

- kernel: Use after free via PI futex state (CVE-2021-3347)

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 affected packages.

See Also

https://cwe.mitre.org/data/definitions/20.html

https://cwe.mitre.org/data/definitions/190.html

https://cwe.mitre.org/data/definitions/200.html

https://cwe.mitre.org/data/definitions/416.html

https://cwe.mitre.org/data/definitions/476.html

https://access.redhat.com/security/cve/CVE-2020-8648

https://access.redhat.com/security/cve/CVE-2020-12362

https://access.redhat.com/security/cve/CVE-2020-12363

https://access.redhat.com/security/cve/CVE-2020-12364

https://access.redhat.com/security/cve/CVE-2020-27170

https://access.redhat.com/security/cve/CVE-2021-3347

https://access.redhat.com/errata/RHSA-2021:2314

https://bugzilla.redhat.com/1802559

https://bugzilla.redhat.com/1922249

https://bugzilla.redhat.com/1930246

https://bugzilla.redhat.com/1930249

https://bugzilla.redhat.com/1930251

https://bugzilla.redhat.com/1940627

Plugin Details

Severity: High

ID: 150379

File Name: redhat-RHSA-2021-2314.nasl

Version: 1.4

Type: local

Agent: unix

Published: 6/9/2021

Updated: 10/7/2021

Dependencies: ssh_get_info.nasl, redhat_repos.nasl, linux_alt_patch_detect.nasl

Risk Information

CVSS Score Source: CVE-2021-3347

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:bpftool, p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists, p-cpe:/a:redhat:enterprise_linux:kernel-bootwrapper, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:python-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: 6/8/2021

Vulnerability Publication Date: 2/6/2020

Reference Information

CVE: CVE-2020-8648, CVE-2020-12362, CVE-2020-12363, CVE-2020-12364, CVE-2020-27170, CVE-2021-3347

RHSA: 2021:2314

CWE: 20, 190, 200, 416, 476