#VU90838 NULL pointer dereference in Linux kernel - CVE-2023-52765

Vulnerability identifier: #VU90838

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-52765

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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

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External links
https://git.kernel.org/stable/c/db98de0809f12b0edb9cd1be78e1ec1bfeba8f40
https://git.kernel.org/stable/c/4ce77b023d42a9f1062eecf438df1af4b4072eb2
https://git.kernel.org/stable/c/affae18838db5e6b463ee30c821385695af56dc2
https://git.kernel.org/stable/c/7b439aaa62fee474a0d84d67a25f4984467e7b95

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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.