Vulnerability identifier: #VU54292

Vulnerability risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-3609

CWE-ID:

Exploitation vector: Local

Exploit availability:

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

Vendor: Linux Foundation

Description

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

The vulnerability exists due to a race condition in the CAN BCM networking protocol (net/can/bcm.c) in the Linux kernel ranging from version 2.6.25 to mainline 5.13-rc6. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Linux kernel:

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Fixed software versions

CPE

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links
http://seclists.org/oss-sec/2021/q2/224
http://github.com/nrb547/kernel-exploitation/blob/main/cve-2021-3609/cve-2021-3609.md

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?