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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2019-20794 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.openwall.com/lists/oss-security/2020/08/24/1 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2020/08/24/1 Mailing List  Third Party Advisory 
https://github.com/sargun/fuse-example Exploit  Third Party Advisory 
https://github.com/sargun/fuse-example Exploit  Third Party Advisory 
https://security.netapp.com/advisory/ntap-20200608-0001/ Third Party Advisory 
https://security.netapp.com/advisory/ntap-20200608-0001/ Third Party Advisory 
https://sourceforge.net/p/fuse/mailman/message/36598753/ Exploit  Third Party Advisory 
https://sourceforge.net/p/fuse/mailman/message/36598753/ Exploit  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-772 Missing Release of Resource after Effective Lifetime cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

7 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-20794
NVD Published Date:
05/09/2020
NVD Last Modified:
11/20/2024
Source:
MITRE