CVE-2020-11935

2023-04-0702:15:07

CWE-911

[email protected]

web.nvd.nist.gov

cve-2020-11935

aufs

inode

reference counts

vulnerability

denial of service

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

It was discovered that aufs improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service attack.

Affected configurations

NVD

Node

canonicalubuntu_linuxMatch14.04esm

canonicalubuntu_linuxMatch16.04esm

canonicalubuntu_linuxMatch18.04lts

canonicalubuntu_linuxMatch20.04lts

Node

debiandebian_linuxMatch10.0

CPENameOperatorVersion
canonical:ubuntu_linuxcanonical ubuntu linuxeq14.04
canonical:ubuntu_linuxcanonical ubuntu linuxeq16.04
canonical:ubuntu_linuxcanonical ubuntu linuxeq18.04
canonical:ubuntu_linuxcanonical ubuntu linuxeq20.04

CPE	Name	Operator	Version
canonical:ubuntu_linux	canonical ubuntu linux	eq	14.04
canonical:ubuntu_linux	canonical ubuntu linux	eq	16.04
canonical:ubuntu_linux	canonical ubuntu linux	eq	18.04
canonical:ubuntu_linux	canonical ubuntu linux	eq	20.04

CNA Affected

[
  {
    "vendor": "Ubuntu",
    "product": "Linux kernel (aufs filesystem module)",
    "versions": [
      {
        "version": "4.4.0-186.216",
        "status": "unaffected",
        "lessThan": "4.4*",
        "versionType": "custom"
      },
      {
        "version": "4.15.0-112.113",
        "status": "unaffected",
        "lessThan": "4.15*",
        "versionType": "custom"
      },
      {
        "version": "5.4.0-42.46",
        "status": "unaffected",
        "lessThan": "5.4*",
        "versionType": "custom"
      }
    ]
  }
]