CVE-2020-35513
kernel: Nfsd failure to clear umask after processing an open or create
Severity
LowRed Hat Product Security
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 · 4.4CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE-271 · Privilege Dropping / Lowering Errors