Input validation error in Linux kernel s390 cio driver

1) Input validation error

EUVDB-ID: #VU94490

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-2022-48798

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 improper input validation within the io_subchannel_chp_event() function in drivers/s390/cio/device.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/fe990b7bf6ac93f1d850d076b8f0e758268aa4ab
http://git.kernel.org/stable/c/a0619027f11590b2070624297530c34dc7f91bcd
http://git.kernel.org/stable/c/dd9cb842fa9d90653a9b48aba52f89c069f3bc50

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.