NULL pointer dereference in Linux kernel gpio driver

1) NULL pointer dereference

EUVDB-ID: #VU90567

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-2022-48663

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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 gpio_mockup_init() function in drivers/gpio/gpio-mockup.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/bdea98b98f844bd8a983ca880893e509a8b4162f
http://git.kernel.org/stable/c/18352095a0d581f6aeb1e9fc9d68cc0152cd64b4
http://git.kernel.org/stable/c/af0bfabf06c74c260265c30ba81a34e7dec0e881
http://git.kernel.org/stable/c/b7df41a6f79dfb18ba2203f8c5f0e9c0b9b57f68

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.