cve/2021/CVE-2021-3743.md

### [CVE-2021-3743](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3743)
![](https://img.shields.io/static/v1?label=Product&message=Kernel&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=Affects%20linux%20kernel%20v5.14.0-rc6%20and%20above.%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-125%20-%20Out-of-bounds%20Read&color=brightgreen)

### Description

An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel. A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.

### POC

#### Reference
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e78c597c3ebfd0cb329aa09a838734147e4f117
- https://www.oracle.com/security-alerts/cpujul2022.html

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