Vulnerability identifier: #VU90539

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-2021-47332

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 usb_stream_free() function in sound/usb/usx2y/usb_stream.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/88262229b778f4f7a896da828d966f94dcb35d19
http://git.kernel.org/stable/c/7d7f30cf182e55023fa8fde4c084b2d37c6be69d
http://git.kernel.org/stable/c/bee295f5e03510252d18b25cc1d26230256eb87a
http://git.kernel.org/stable/c/82e5ee742fdd8874fe996181b87fafe1eb5f1196
http://git.kernel.org/stable/c/cae0cf651adccee2c3f376e78f30fbd788d0829f

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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.