CVE-2021-3714

2022-08-2316:15:09

CWE-200

redhat

web.nvd.nist.gov

cve-2021-3714

linux kernel

memory deduplication

local exploitation

security vulnerability

nvd

CVSS3

5.9

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

AI Score

5.8

Confidence

High

EPSS

0.001

Percentile

41.2%

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-

VendorProductVersionCPE
linuxlinux_kernel-cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
redhatenterprise_linux6.0cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
redhatenterprise_linux7.0cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
redhatenterprise_linux8.0cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	-	cpe:2.3:o:linux:linux_kernel:-:::::::*
redhat	enterprise_linux	6.0	cpe:2.3:o:redhat:enterprise_linux:6.0:::::::*
redhat	enterprise_linux	7.0	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
redhat	enterprise_linux	8.0	cpe:2.3:o:redhat:enterprise_linux:8.0::::-:::

CNA Affected

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