CVE-2021-4090

Published Feb 18, 2022

Last updated a year ago

Overview

Description
An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat.
Source
secalert@redhat.com
NVD status
Modified

Risk scores

CVSS 3.1

Type
Primary
Base score
7.1
Impact score
5.2
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Severity
HIGH

CVSS 2.0

Type
Primary
Base score
6.6
Impact score
9.2
Exploitability score
3.9
Vector string
AV:L/AC:L/Au:N/C:C/I:C/A:N

Weaknesses

nvd@nist.gov
CWE-787
secalert@redhat.com
CWE-787

Social media

Hype score
Not currently trending

Configurations