Local denial of service in Linux kernel mfd syscon

1) NULL pointer dereference

EUVDB-ID: #VU89236

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-2023-52467

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 a NULL pointer dereference error within the of_syscon_register() function in drivers/mfd/syscon.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 5.10.209

External links

http://git.kernel.org/stable/c/927626a2073887ee30ba00633260d4d203f8e875
http://git.kernel.org/stable/c/c3e3a2144bf50877551138ffce9f7aa6ddfe385b
http://git.kernel.org/stable/c/527e8c5f3d00299822612c495d5adf1f8f43c001
http://git.kernel.org/stable/c/3ef1130deee98997275904d9bfc37af75e1e906c
http://git.kernel.org/stable/c/7f2c410ac470959b88e03dadd94b7a0b71df7973
http://git.kernel.org/stable/c/41673c66b3d0c09915698fec5c13b24336f18dd1

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.