cve/2021/CVE-2021-26708.md

### [CVE-2021-26708](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26708)
![](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

A local privilege escalation was discovered in the Linux kernel before 5.10.13. Multiple race conditions in the AF_VSOCK implementation are caused by wrong locking in net/vmw_vsock/af_vsock.c. The race conditions were implicitly introduced in the commits that added VSOCK multi-transport support.

### POC

#### Reference
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.13
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c518adafa39f37858697ac9309c6cf1805581446

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/Mr-xn/Penetration_Testing_POC
- https://github.com/NaInSec/CVE-PoC-in-GitHub
- https://github.com/SYRTI/POC_to_review
- https://github.com/WhooAmii/POC_to_review
- https://github.com/azpema/CVE-2021-26708
- https://github.com/bcoles/kasld
- https://github.com/bsauce/kernel-security-learning
- https://github.com/c4pt000/kernel-5.11.6-expSEHDsec-HAXM-cgroup-virtio-nvidia-amd-kaliwifi
- https://github.com/c4pt000/kernel-6.6.0-expSEHDsec-HAXM-cgroup-virtio-nvidia-amd-kaliwifi
- https://github.com/c4pt000/kernel-6.8.3-expSEHDsec-fclock-fsync-cpu
- https://github.com/developer3000S/PoC-in-GitHub
- https://github.com/hancp2016/news
- https://github.com/hardenedvault/vault_range_poc
- https://github.com/jordan9001/vsock_poc
- https://github.com/k0mi-tg/CVE-POC
- https://github.com/kdn111/linux-kernel-exploitation
- https://github.com/khanhdn111/linux-kernel-exploitation
- https://github.com/khanhdz-06/linux-kernel-exploitation
- https://github.com/khanhdz191/linux-kernel-exploitation
- https://github.com/khanhhdz/linux-kernel-exploitation
- https://github.com/khanhhdz06/linux-kernel-exploitation
- https://github.com/khanhnd123/linux-kernel-exploitation
- https://github.com/knd06/linux-kernel-exploitation
- https://github.com/lions2012/Penetration_Testing_POC
- https://github.com/manas3c/CVE-POC
- https://github.com/ndk06/linux-kernel-exploitation
- https://github.com/ndk191/linux-kernel-exploitation
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/sereok3/buffer-overflow-writeups
- https://github.com/soosmile/POC
- https://github.com/ssr-111/linux-kernel-exploitation
- https://github.com/trhacknon/Pocingit
- https://github.com/whoforget/CVE-POC
- https://github.com/wkhnh06/linux-kernel-exploitation
- https://github.com/x90hack/vulnerabilty_lab
- https://github.com/xairy/linux-kernel-exploitation
- https://github.com/xuetusummer/Penetration_Testing_POC
- https://github.com/youwizard/CVE-POC
- https://github.com/zecool/cve
- https://github.com/zhaoolee/garss