CVE-2021-3732

CVE Details

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

Description

A security issue was found in Linux kernels OverlayFS subsystem where a local attacker who has the ability to mount the TmpFS filesystem with OverlayFS can abuse a logic bug in the overlayfs code which can inadvertently reveal files hidden in the original mount.

See more information about CVE-2021-3732 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:	5.5
Vector String:	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (kernel-uek)	ELSA-2021-9577	2021-12-06
Oracle Linux version 7 (kernel-uek)	ELSA-2021-9577	2021-12-06
Oracle Linux version 8 (kernel)	ELSA-2021-4356	2021-11-16
Oracle VM version 3 (kernel-uek)	OVMSA-2021-0039	2021-12-06