Vulnerability identifier: #VU93401

Vulnerability risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-47170

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory corruption within the proc_bulk() and proc_do_submiturb() functions in drivers/usb/core/devio.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

---

External links
http://git.kernel.org/stable/c/2ab21d6e1411999b5fb43434f421f00bf50002eb
http://git.kernel.org/stable/c/2c835fede13e03f2743a333e4370b5ed2db91e83
http://git.kernel.org/stable/c/8d83f109e920d2776991fa142bb904d985dca2ed
http://git.kernel.org/stable/c/9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098
http://git.kernel.org/stable/c/4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.