CVE-2021-4203

CVE Details

Release Date:

2022-03-25

Description

A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.

See more information about CVE-2021-4203 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:	6.8	Base Metrics:	AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
Access Vector:	Network	Attack Complexity:	High
Privileges Required:	Low	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	High
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (kernel-uek)	ELSA-2022-9348	2022-05-03
Oracle Linux version 7 (kernel-uek)	ELSA-2022-9348	2022-05-03
Oracle Linux version 8 (kernel)	ELSA-2022-1988	2022-05-17
Oracle VM version 3 (kernel-uek)	OVMSA-2022-0014	2022-05-03

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