CVE-2021-3739

CVE Details

Release Date:	2022-03-10
Impact:	None	What is this?

Description

A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires CAP_SYS_ADMIN. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability.

See more information about CVE-2021-3739 from MITRE CVE dictionary and NIST NVD

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

CVSS v3 metrics

Base Score:	7.1
Vector String:	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Version:	3.0
Attack Vector:	Local
Attack Complexity:	Low
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 7 (kernel-uek)	ELSA-2021-9457	2021-09-22
Oracle Linux version 7 (kernel-uek)	ELSA-2021-9474	2021-10-11
Oracle Linux version 7 (kernel-uek-container)	ELSA-2021-9461	2021-09-22
Oracle Linux version 7 (kernel-uek-container)	ELSA-2021-9475	2021-10-11
Oracle Linux version 8 (kernel-uek)	ELSA-2021-9457	2021-09-22
Oracle Linux version 8 (kernel-uek)	ELSA-2021-9474	2021-10-11
Oracle Linux version 8 (kernel-uek-container)	ELSA-2021-9461	2021-09-22
Oracle Linux version 8 (kernel-uek-container)	ELSA-2021-9475	2021-10-11