CVE-2020-35513
mediumpriority · track · 20EPSS 0.014 · 72 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (17)
External citations — patches, advisories, analysis.
- https://bugzilla.redhat.com/show_bug.cgi?id=1911309cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2020-35513cnnvd
- https://packetstormsecurity.com/files/161258/Red-Hat-Security-Advisory-2021-0336-01.htmlcnnvd
- https://packetstormsecurity.com/files/161656/Red-Hat-Security-Advisory-2021-0719-01.htmlcnnvd
- https://patchwork.kernel.org/project/linux-nfs/patch/20180403203916.GH20297@fieldses.org/cnnvd
- https://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-NFS-Umask-34458cnnvd
- https://www.auscert.org.au/bulletins/ESB-2021.0365/cnnvd
- https://www.auscert.org.au/bulletins/ESB-2021.0791cnnvd
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