Vulnerability CVE-2021-20320

Vulnerability Name:

CVE-2021-20320 (CCN-212876)

Assigned:

2020-12-17

Published:

2021-09-06

Updated:

2023-06-30

Summary:

CVSS v3 Severity:

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

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

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

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

CVSS v2 Severity:

2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N)

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

4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:N/A:N)

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

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2021-20320

Source: CCN
Type: Red Hat Bugzilla Bug 2010090
(CVE-2021-20320) - CVE-2021-20320 kernel: s390 eBPF JIT miscompilation issues fixes

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

Source: XF
Type: UNKNOWN
linux-kernel-cve202120320-info-disc(212876)

Source: CCN
Type: Linux Kernel Web page
bpf/tests: Extend JIT test suite coverage

Source: secalert@redhat.com
Type: Patch, Vendor Advisory
secalert@redhat.com

Vulnerable Configuration:

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:70326	P	Security update for the Linux Kernel (Important)	2021-12-07
oval:org.opensuse.security:def:6722	P	Security update for the Linux Kernel (Important)	2021-12-07
oval:org.opensuse.security:def:10186	P	Security update for the Linux Kernel (Important)	2021-12-07
oval:org.opensuse.security:def:8262	P	Security update for the Linux Kernel (Important)	2021-12-07
oval:org.opensuse.security:def:67811	P	Security update for the Linux Kernel (Important)	2021-12-07
oval:org.opensuse.security:def:8685	P	Security update for the Linux Kernel (Important)	2021-12-07
oval:org.opensuse.security:def:69572	P	Security update for the Linux Kernel (Important)	2021-12-07
oval:org.opensuse.security:def:9432	P	Security update for the Linux Kernel (Important)	2021-12-07

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