CVE-2020-11935 - CVE House
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Status published Medium CVE-2020-11935

aufs: improperly managed inode reference counts in the vfsub_dentry_open() method

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Mauricio Faria de Oliveira discovered that the aufs implementation in the Linux kernel improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service.

Affected Vendor

Affected Software

Linux kernel (aufs filesystem module)
Vulnerable Versions:
4.4.0-186.216, 4.15.0-112.113, 5.4.0-42.46

Timeline

Official Publish: April 7th, 2023
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.