Vulnerability CVE-2020-27820

Vulnerability Name:

CVE-2020-27820 (CCN-211325)

Assigned:

2020-11-02

Published:

2020-11-02

Updated:

2023-02-12

Summary:

A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if "unbind" the driver).

CVSS v3 Severity:

4.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)
4.1 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): High Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

4.1 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H)
3.6 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): High Privileges Required (PR): High User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

4.1 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H)
3.6 Low (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): High Privileges Required (PR): High User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

CVSS v2 Severity:

4.7 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:N/I:N/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

3.8 Low (CCN CVSS v2 Vector: AV:L/AC:H/Au:S/C:N/I:N/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): High Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

Vulnerability Type:

CWE-416

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2020-27820

Source: CCN
Type: Red Hat Bugzilla Bug 1901726
(CVE-2020-27820) - CVE-2020-27820 kernel: use-after-free in nouveau kernel module

Source: secalert@redhat.com
Type: Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com

Source: XF
Type: UNKNOWN
linux-kernel-cve202027820-dos(211325)

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Vulnerable Configuration:

Configuration RedHat 1:

cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

Configuration RedHat 2:

cpe:/a:redhat:enterprise_linux:8::nfv:*:*:*:*:*

Configuration RedHat 3:

cpe:/a:redhat:enterprise_linux:8::realtime:*:*:*:*:*

Configuration RedHat 4:

cpe:/a:redhat:enterprise_linux:8::crb:*:*:*:*:*

Configuration RedHat 5:

cpe:/o:redhat:enterprise_linux:8:*:*:*:*:*:*:*

Configuration RedHat 6:

cpe:/o:redhat:enterprise_linux:8::baseos:*:*:*:*:*

Configuration CCN 1:

cpe:/o:linux:linux_kernel:-:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:8029	P	kernel-docs-5.14.21-150500.53.2 on GA media (Moderate)	2023-06-20
oval:org.opensuse.security:def:7712	P	libzzip-0-13-0.13.69-3.10.1 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:7539	P	kernel-64kb-5.14.21-150500.53.2 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:7720	P	mozilla-nspr-32bit-4.34.1-150000.3.26.1 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:8090	P	reiserfs-kmp-default-5.14.21-150500.53.2 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:7593	P	libgstphotography-1_0-0-1.22.0-150500.1.3 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:3743	P	perl-32bit-5.18.2-12.20.1 on GA media (Moderate)	2022-06-28
oval:org.opensuse.security:def:3448	P	busybox-1.21.1-3.3 on GA media (Moderate)	2022-06-28
oval:org.opensuse.security:def:3453	P	clamav-0.101.3-1.19 on GA media (Moderate)	2022-06-28
oval:org.opensuse.security:def:3567	P	libXtst6-1.2.2-7.1 on GA media (Moderate)	2022-06-28
oval:org.opensuse.security:def:3398	P	wpa_supplicant-2.6-15.10.1 on GA media (Moderate)	2022-06-28
oval:org.opensuse.security:def:95083	P	kernel-azure-5.14.21-150400.12.1 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:94590	P	kernel-64kb-5.14.21-150400.22.1 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:95197	P	kernel-default-extra-5.14.21-150400.22.1 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:95028	P	kernel-docs-5.14.21-150400.22.1 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:2960	P	kernel-64kb-5.14.21-150400.22.1 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:95078	P	reiserfs-kmp-default-5.14.21-150400.22.1 on GA media (Moderate)	2022-06-22
oval:com.redhat.rhsa:def:20221988	P	RHSA-2022:1988: kernel security, bug fix, and enhancement update (Important)	2022-05-10
oval:org.opensuse.security:def:4601	P	Security update for the Linux Kernel (Live Patch 19 for SLE 12 SP5) (Important)	2022-05-10
oval:com.redhat.rhsa:def:20221975	P	RHSA-2022:1975: kernel-rt security and bug fix update (Important)	2022-05-10
oval:org.opensuse.security:def:125394	P	Security update for the Linux Kernel (Important)	2022-02-11
oval:org.opensuse.security:def:125797	P	Security update for the Linux Kernel (Important)	2022-02-11
oval:org.opensuse.security:def:126960	P	Security update for the Linux Kernel (Important)	2022-02-11
oval:org.opensuse.security:def:125120	P	Security update for the Linux Kernel (Important)	2022-02-11
oval:org.opensuse.security:def:127358	P	Security update for the Linux Kernel (Important)	2022-02-11
oval:org.opensuse.security:def:118646	P	Security update for the Linux Kernel (Important)	2022-01-26
oval:org.opensuse.security:def:119415	P	Security update for the Linux Kernel (Important)	2022-01-26
oval:org.opensuse.security:def:42189	P	Security update for the Linux Kernel (Important)	2022-01-26
oval:org.opensuse.security:def:118730	P	Security update for the Linux Kernel (Important)	2022-01-26
oval:org.opensuse.security:def:119600	P	Security update for the Linux Kernel (Important)	2022-01-26
oval:org.opensuse.security:def:118182	P	Security update for the Linux Kernel (Important)	2022-01-26
oval:org.opensuse.security:def:118920	P	Security update for the Linux Kernel (Important)	2022-01-26
oval:org.opensuse.security:def:119225	P	Security update for the Linux Kernel (Important)	2022-01-26
oval:org.opensuse.security:def:100400	P	(Important)	2022-01-19
oval:org.opensuse.security:def:1748	P	Security update for the Linux Kernel (Important)	2022-01-19
oval:org.opensuse.security:def:101892	P	Security update for the Linux Kernel (Important)	2022-01-19
oval:org.opensuse.security:def:99472	P	(Important)	2022-01-19
oval:org.opensuse.security:def:1316	P	Security update for the Linux Kernel (Important)	2022-01-19
oval:org.opensuse.security:def:102306	P	Security update for the Linux Kernel (Important)	2022-01-19
oval:org.opensuse.security:def:100734	P	(Important)	2022-01-19
oval:org.opensuse.security:def:1799	P	Security update for the Linux Kernel (Important)	2022-01-19
oval:org.opensuse.security:def:859	P	Security update for the Linux Kernel (Important)	2022-01-19
oval:org.opensuse.security:def:101969	P	Security update for the Linux Kernel (Important)	2022-01-19
oval:org.opensuse.security:def:99734	P	(Important)	2022-01-19
oval:org.opensuse.security:def:102351	P	Security update for the Linux Kernel (Important)	2022-01-19
oval:org.opensuse.security:def:101590	P	Security update for the Linux Kernel (Important)	2022-01-19
oval:org.opensuse.security:def:42268	P	Security update for the Linux Kernel (Important)	2022-01-19
oval:org.opensuse.security:def:1159	P	Security update for the Linux Kernel (Important)	2022-01-19
oval:org.opensuse.security:def:100062	P	(Important)	2022-01-19
oval:org.opensuse.security:def:101837	P	Security update for the Linux Kernel (Important)	2022-01-19
oval:org.opensuse.security:def:99198	P	(Important)	2022-01-19
oval:org.opensuse.security:def:1232	P	Security update for the Linux Kernel (Important)	2022-01-19
oval:org.opensuse.security:def:4742	P	Security update for the Linux Kernel (Important)	2022-01-17
oval:org.opensuse.security:def:21845	P	Security update for the Linux Kernel (Important)	2022-01-17
oval:org.opensuse.security:def:102159	P	Security update for the Linux Kernel (Important)	2022-01-14
oval:org.opensuse.security:def:6188	P	Security update for the Linux Kernel (Important)	2022-01-14
oval:org.opensuse.security:def:34682	P	Security update for the Linux Kernel (Important)	2022-01-14
oval:org.opensuse.security:def:68809	P	Security update for the Linux Kernel (Important)	2022-01-14
oval:org.opensuse.security:def:1602	P	Security update for the Linux Kernel (Important)	2022-01-14
oval:org.opensuse.security:def:42355	P	Security update for the Linux Kernel (Important)	2022-01-14
oval:org.opensuse.security:def:60505	P	Security update for the Linux Kernel (Important)	2022-01-14
oval:org.opensuse.security:def:26227	P	Security update for the Linux Kernel (Important)	2022-01-13
oval:org.opensuse.security:def:19626	P	Security update for the Linux Kernel (Important)	2022-01-13
oval:org.opensuse.security:def:61117	P	Security update for the Linux Kernel (Important)	2022-01-13
oval:org.opensuse.security:def:6359	P	Security update for the Linux Kernel (Important)	2022-01-13
oval:org.opensuse.security:def:34681	P	Security update for the Linux Kernel (Important)	2022-01-13
oval:org.opensuse.security:def:5357	P	Security update for the Linux Kernel (Important)	2022-01-13
oval:org.opensuse.security:def:20589	P	Security update for the Linux Kernel (Important)	2022-01-13
oval:org.opensuse.security:def:4305	P	Security update for the Linux Kernel (Important)	2022-01-13
oval:org.opensuse.security:def:60504	P	Security update for the Linux Kernel (Important)	2022-01-13
oval:org.opensuse.security:def:6177	P	Security update for the Linux Kernel (Important)	2022-01-13
oval:org.opensuse.security:def:4701	P	Security update for the Linux Kernel (Important)	2022-01-13
oval:org.opensuse.security:def:35294	P	Security update for the Linux Kernel (Important)	2022-01-13
oval:org.opensuse.security:def:6299	P	Security update for the Linux Kernel (Important)	2022-01-11
oval:org.opensuse.security:def:76456	P	Security update for the Linux Kernel (Important)	2022-01-11
oval:org.opensuse.security:def:68682	P	Security update for the Linux Kernel (Important)	2022-01-11
oval:org.opensuse.security:def:111873	P	Security update for the Linux Kernel (Important)	2022-01-11
oval:org.opensuse.security:def:67388	P	Security update for the Linux Kernel (Important)	2022-01-11
oval:org.opensuse.security:def:44822	P	Security update for the Linux Kernel (Important)	2022-01-11
oval:org.opensuse.security:def:1564	P	Security update for the Linux Kernel (Important)	2022-01-11
oval:org.opensuse.security:def:102125	P	Security update for the Linux Kernel (Important)	2022-01-11
oval:org.opensuse.security:def:40392	P	Security update for the Linux Kernel (Important)	2022-01-11
oval:org.opensuse.security:def:10710	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:70850	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:111858	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:67377	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:73954	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:6491	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:64832	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:74758	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:7298	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:67580	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:8402	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:6288	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:65690	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:76445	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:68387	P	Security update for the Linux Kernel (Important) (in QA)	2022-01-07
oval:org.opensuse.security:def:42150	P	Security update for the Linux RT Kernel (Important)	2021-12-09
oval:org.opensuse.security:def:95964	P	Security update for the Linux RT Kernel (Important)	2021-12-09
oval:org.opensuse.security:def:68801	P	Security update for the Linux RT Kernel (Important)	2021-12-09
oval:org.opensuse.security:def:102677	P	Security update for the Linux RT Kernel (Important)	2021-12-09
oval:org.opensuse.security:def:109343	P	Security update for the Linux RT Kernel (Important)	2021-12-09
oval:org.opensuse.security:def:118434	P	Security update for the Linux RT Kernel (Important)	2021-12-09

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