Vulnerability identifier: #VU90404

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-2021-47436

CWE-ID: CWE-476

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 NULL pointer dereference within the dsps_probe() function in drivers/usb/musb/musb_dsps.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

---

External links
http://git.kernel.org/stable/c/5ed60a430fb5f3d93e7fef66264daef466b4d10c
http://git.kernel.org/stable/c/e923bce31ffefe4f60edfc6b84f62d4a858f3676
http://git.kernel.org/stable/c/9ab5d539bc975b8dcde86eca1b58d836b657732e
http://git.kernel.org/stable/c/9d89e287116796bf987cc48f5c8632ef3048f8eb
http://git.kernel.org/stable/c/ff9249aab39820be11b6975a10d94253b7d426fc
http://git.kernel.org/stable/c/c2115b2b16421d93d4993f3fe4c520e91d6fe801

---

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.