Vulnerability · Published Jan 25, 2021 · Assigned by redhat

CVE-2020-35513

Medium 4.9

In plain English

A medium-severity security flaw in kernel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)4.9Medium
Exploit odds (30 days)1.4%top 28.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux4.16.5-1DEBIAN-CVE-2020-35513
Debian:13linux4.16.5-1DEBIAN-CVE-2020-35513
Debian:14linux4.16.5-1DEBIAN-CVE-2020-35513

Affected products (as reported)

VendorProductVersions
n/a kernel before kernel 4.17-rc1

Weakness: CWE-271

References