CVE-2021-28964

CVE Details

Release Date:

2021-03-22

Description

A race condition was discovered in get_old_root in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (BUG) because of a lack of locking on an extent buffer before a cloning operation, aka CID-dbcc7d57bffc.

See more information about CVE-2021-28964 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:	4.7	Base Metrics:	AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Access Vector:	Local network	Attack Complexity:	High
Privileges Required:	Low	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (kernel-uek)	ELSA-2021-9215	2021-05-06
Oracle Linux version 7 (kernel-uek)	ELSA-2021-9215	2021-05-06
Oracle Linux version 7 (kernel-uek)	ELSA-2021-9220	2021-05-10
Oracle Linux version 7 (kernel-uek)	ELSA-2021-9222	2021-05-10
Oracle Linux version 7 (kernel-uek-container)	ELSA-2021-9221	2021-06-01
Oracle Linux version 7 (kernel-uek-container)	ELSA-2021-9223	2021-05-10
Oracle Linux version 8 (kernel-uek)	ELSA-2021-9220	2021-05-10
Oracle Linux version 8 (kernel-uek-container)	ELSA-2021-9221	2021-06-01
Oracle VM version 3 (kernel-uek)	OVMSA-2021-0016	2021-05-06

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