CVE-2019-20794

State: Published
Severity: Not scored
Published: May 9, 2020
Updated: Oct 8, 2026
Reserved: May 9, 2020

Description

An issue was discovered in the Linux kernel 4.18 through 5.6.11 when unprivileged user namespaces are allowed. A user can create their own PID namespace, and mount a FUSE filesystem. Upon interaction with this FUSE filesystem, if the userspace component is terminated via a kill of the PID namespace's pid 1, it will result in a hung task, and resources being permanently locked up until system reboot. This can result in resource exhaustion.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://github.com/sargun/fuse-example
https://sourceforge.net/p/fuse/mailman/message/36598753/
https://security.netapp.com/advisory/ntap-20200608-0001/
[oss-security] 20200824 CVE-2019-20794 kernel: task processes not being properly ended could lead to resource exhaustionmailing-list

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