CVE-2021-32606

2021-05-1221:57:20

redhat.com

access.redhat.com

linux kernel

use-after-free

isotp_setsockopt

arbitrary execution

sk_error_report

rop chain

root privileges

data confidentiality

data integrity

system availability

cve-2021-32606

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

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

Percentile

14.2%

JSON

A flaw was found in the Linux kernel. A use-after-free flaw in isotp_setsockopt leads to arbitrary kernel execution by overwriting the sk_error_report() pointer which can be misused in order to execute a user-controlled ROP chain to gain root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.