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.
Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2019-11331 | 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. |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 08 Oct 2026 22:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Projects
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-10-08T21:03:30.090Z
Reserved: 2020-05-09T00:00:00.000Z
Link: CVE-2019-20794
Updated: 2024-08-05T02:53:09.326Z
Status : Modified
Published: 2020-05-09T18:15:11.157
Modified: 2026-10-08T21:17:19.947
Link: CVE-2019-20794
OpenCVE Enrichment
No data.
EUVD