Vulnerability identifier: #VU55231

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2021-3612

CWE-ID:

Exploitation vector: Local

Exploit availability:

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor:

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in joystick devices subsystem in Linux kernel. A local user can make a specially crafted JSIOCSBTNMAP IOCTL call, trigger out-of-bounds write and execute arbitrary code with escalated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

---

External links
http://lore.kernel.org/linux-input/20210620120030.1513655-1-avlarkin82@gmail.com/
http://bugzilla.redhat.com/show_bug.cgi?id=1974079

---

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?