CVE-2021-4157

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.

CVSS v3.0 8.0 HIGH
CVSS v2.0 7.4 HIGH

8.0^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.1 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.4^/10

CVSS v2.0 : HIGH

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

Exploitability : 4.4 / Impact : 10.0

Access Vector ADJACENT_NETWORK

Access Complexity MEDIUM

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=2034342	Issue Tracking Third Party Advisory
https://lore.kernel.org/lkml/20210517140244.822185482@linuxfoundation.org/	Exploit Mailing List Patch Vendor Advisory
https://security.netapp.com/advisory/ntap-20220602-0007/
https://www.oracle.com/security-alerts/cpujul2022.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel:5.13:-::::::
	cpe:2.3:o:linux:linux_kernel::::::::

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Information

Published : 2022-03-25 19:15

Updated : 2022-07-25 18:18

NVD link : CVE-2021-4157

Mitre link : CVE-2021-4157

JSON object : View

Products Affected

fedoraproject

fedora

linux

linux_kernel

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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