CVE-2021-4157

high

Description

An out of memory bounds write flaw (1 or 2 bytes of memory) in the Linux kernel NFS subsystem was found in the way users use mirroring (replication of files with NFS). A user, having access to the NFS mount, could potentially use this flaw to crash the system or escalate privileges on the system.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2034342

https://lore.kernel.org/lkml/[email protected]/

https://security.netapp.com/advisory/ntap-20220602-0007/

https://www.oracle.com/security-alerts/cpujul2022.html

Details

Source: MITRE

Published: 2022-03-25

Updated: 2022-10-19

Type: CWE-119

Risk Information

CVSS v2

Base Score: 7.4

Vector: AV:A/AC:M/Au:S/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 4.4

Severity: HIGH

CVSS v3

Base Score: 8

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

Impact Score: 5.9

Exploitability Score: 2.1

Severity: HIGH