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.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004487 advisory.

    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.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Scientific Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the SLSA-2021:0336-1 advisory.

  - kernel: use-after-free in fs/block_dev.c (CVE-2020-15436)

  - kernel: Nfsd failure to clear umask after processing an open or create (CVE-2020-35513)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
290150	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-004487)	Nessus	Unity Linux Local Security Checks	medium
239342	TencentOS Server 4: kernel (TSSA-2024:0981)	Nessus	Tencent Local Security Checks	high
146064	Scientific Linux Security Update : kernel on SL7.x x86_64 (2021:0336)	Nessus	Scientific Linux Local Security Checks	medium

Detections

Analytics

CVE-2020-35513

medium

Tenable Plugins

medium

high

medium