CVE-2021-3492

2021-04-1619:11:58

redhat.com

access.redhat.com

linux kernel

shiftfs

file-system

cve-2021-3492

vulnerability

confidentiality

integrity

system availability

CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS3

8.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS

0.001

Percentile

17.9%

JSON

A flaw use after free (or use before allocation) in the Linux kernel Shiftfs file-system was found in the way user calls one of the few ioctls. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.