CVE-2021-3714

2022-08-2316:15:09

CWE-200

[email protected]

web.nvd.nist.gov

cve-2021-3714

linux kernel

memory deduplication

local exploitation

security vulnerability

nvd

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

5.8 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

41.3%

JSON

A flaw was found in the Linux kernels memory deduplication mechanism. Previous work has shown that memory deduplication can be attacked via a local exploitation mechanism. The same technique can be used if an attacker can upload page sized files and detect the change in access time from a networked service to determine if the page has been merged.

Affected configurations

NVD

Node

linuxlinux_kernelMatch-

Node

redhatenterprise_linuxMatch6.0

redhatenterprise_linuxMatch7.0

redhatenterprise_linuxMatch8.0-

CPENameOperatorVersion
linux:linux_kernellinux linux kerneleq-

CPE	Name	Operator	Version
linux:linux_kernel	linux linux kernel	eq	-

CNA Affected

[
  {
    "product": "kernel",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Not known"
      }
    ]
  }
]