Vulnerability identifier: #VU90390

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-2021-47522

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 bigben_worker() function in drivers/hid/hid-bigbenff.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/8e0ceff632f48175ec7fb4706129c55ca8a7c7bd
http://git.kernel.org/stable/c/6272b17001e6fdcf7b4a16206287010a1523fa6e
http://git.kernel.org/stable/c/58f15f5ae7786c824868f3a7e093859b74669ce7
http://git.kernel.org/stable/c/918aa1ef104d286d16b9e7ef139a463ac7a296f0

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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.