cve/2009/CVE-2009-1630.md

### [CVE-2009-1630](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1630)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The nfs_permission function in fs/nfs/dir.c in the NFS client implementation in the Linux kernel 2.6.29.3 and earlier, when atomic_open is available, does not check execute (aka EXEC or MAY_EXEC) permission bits, which allows local users to bypass permissions and execute files, as demonstrated by files on an NFSv4 fileserver.

### POC

#### Reference
- http://www.ubuntu.com/usn/usn-793-1
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9990

#### Github
No PoCs found on GitHub currently.