CVEs-PoC/2013/CVE-2013-2140.md

### [CVE-2013-2140](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-2140)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

The dispatch_discard_io function in drivers/block/xen-blkback/blkback.c in the Xen blkback implementation in the Linux kernel before 3.10.5 allows guest OS users to cause a denial of service (data loss) via filesystem write operations on a read-only disk that supports the (1) BLKIF_OP_DISCARD (aka discard or TRIM) or (2) SCSI UNMAP feature.

### POC

#### Reference
- http://www.ubuntu.com/usn/USN-1938-1
- http://www.ubuntu.com/usn/USN-1944-1
- http://www.ubuntu.com/usn/USN-1946-1
- http://www.ubuntu.com/usn/USN-2038-1
- http://www.ubuntu.com/usn/USN-2039-1

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