cve/2015/CVE-2015-4177.md

### [CVE-2015-4177](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4177)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20n%2Fa%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The collect_mounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted, which allows local users to cause a denial of service (system crash) by leveraging user-namespace root access for an MNT_DETACH umount2 system call.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/thdusdl1219/CVE-Study
- https://github.com/vincent-deng/veracode-container-security-finding-parser
Update Sun May 26 14:27:04 CEST 2024 2024-05-26 14:27:05 +02:00			`### [CVE-2015-4177](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4177)`
			`![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)`
Update Mon May 27 13:12:02 UTC 2024 2024-05-27 13:12:02 +00:00			`![](https://img.shields.io/static/v1?label=Version&message=%3D%20n%2Fa%20&color=brighgreen)`
Update Sun May 26 14:27:04 CEST 2024 2024-05-26 14:27:05 +02:00			`![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)`

			`### Description`

			`The collect_mounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted, which allows local users to cause a denial of service (system crash) by leveraging user-namespace root access for an MNT_DETACH umount2 system call.`

			`### POC`

			`#### Reference`
			`No PoCs from references.`

			`#### Github`
			`- https://github.com/thdusdl1219/CVE-Study`
			`- https://github.com/vincent-deng/veracode-container-security-finding-parser`