Local denial of service in Linux kernel input driver

1) Input validation error

EUVDB-ID: #VU87772

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/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-2022-48619

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input within the input_set_capability() function in drivers/input/input.c. A local user can crash the OS kernel.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 5.17

External links

http://github.com/torvalds/linux/commit/409353cbe9fe48f6bc196114c442b1cff05a39bc
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.10

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.