CVE-2021-20177

CVE Details

Release Date:

2021-05-26

Description

A flaw was found in the Linux kernel's implementation of string matching within a packet. A privileged user (with root or CAP_NET_ADMIN) when inserting iptables rules could insert a rule which can panic the system. Kernel before kernel 5.5-rc1 is affected.

See more information about CVE-2021-20177 from MITRE CVE dictionary and NIST NVD

CVSS v3.0 metrics

NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score:	4.4	Base Metrics:	AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Access Vector:	Local network	Attack Complexity:	Low
Privileges Required:	High	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (kernel-uek)	ELSA-2021-9037	2021-02-08
Oracle Linux version 7 (kernel-uek-container)	ELSA-2021-9038	2021-02-08
Oracle Linux version 8 (kernel-uek)	ELSA-2021-9037	2021-02-08
Oracle Linux version 8 (kernel-uek-container)	ELSA-2021-9038	2021-02-08

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team