### [CVE-2018-1093](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1093)
![](https://img.shields.io/static/v1?label=Product&message=Linux%20kernel%20through%20version%204.15&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20Linux%20kernel%20through%20version%204.15%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=out-of-bounds%20read&color=brighgreen)

### Description

The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.

### POC

#### Reference
- https://bugzilla.kernel.org/show_bug.cgi?id=199181
- https://bugzilla.kernel.org/show_bug.cgi?id=199181

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