NULL pointer dereference in Linux kernel mfd driver

1) NULL pointer dereference

EUVDB-ID: #VU90838

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-2023-52765

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 DEFINE_MUTEX(), qcom_pmic_get_base_usid(), qcom_pmic_get() and pmic_spmi_probe() functions in drivers/mfd/qcom-spmi-pmic.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

CPE2.3

External links

http://git.kernel.org/stable/c/db98de0809f12b0edb9cd1be78e1ec1bfeba8f40
http://git.kernel.org/stable/c/4ce77b023d42a9f1062eecf438df1af4b4072eb2
http://git.kernel.org/stable/c/affae18838db5e6b463ee30c821385695af56dc2
http://git.kernel.org/stable/c/7b439aaa62fee474a0d84d67a25f4984467e7b95

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.