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

CVSS3

5.5

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

AI Score

Confidence

High

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

VendorProductVersionCPE
canonicalubuntu_linux20.04cpe:/o:canonical:ubuntu_linux:20.04::lts:
canonicalubuntu_linux14.04cpe:/o:canonical:ubuntu_linux:14.04::esm:
canonicalubuntu_linux16.04cpe:/o:canonical:ubuntu_linux:16.04::esm:
canonicalubuntu_linux18.04cpe:/o:canonical:ubuntu_linux:18.04::lts:

Vendor	Product	Version	CPE
canonical	ubuntu_linux	20.04	cpe:/o:canonical:ubuntu_linux:20.04::lts:
canonical	ubuntu_linux	14.04	cpe:/o:canonical:ubuntu_linux:14.04::esm:
canonical	ubuntu_linux	16.04	cpe:/o:canonical:ubuntu_linux:16.04::esm:
canonical	ubuntu_linux	18.04	cpe:/o:canonical:ubuntu_linux:18.04::lts:

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"
      }
    ]
  }
]