CVE Database›Document archive›CVE-2020-35513

CVE-2020-35513

kernel: Nfsd failure to clear umask after processing an open or create

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Severity

Low

Red Hat Product Security

4.4

CVSS 3.1

Review impact separately from score.

Published · December 21, 2020

Updated · June 28, 2026

Description

A flaw incorrect umask during file or directory modification in the Linux kernel NFS (network file system) functionality was found in the way user create and delete object using NFSv4.2 or newer if both simultaneously accessing the NFS by the other process that is not using new NFSv4.2. A user with access to the NFS could use this flaw to starve the resources causing denial of service.

Statement

This flaw is rated as having Low impact because of the exploitation prerequisities and the fact that the attacker could only decrease the permissions of the file or directory.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 4.4
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE-271 · Privilege Dropping / Lowering Errors