NULL pointer dereference in Linux kernel power supply driver

1) NULL pointer dereference

EUVDB-ID: #VU97262

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-2024-46693

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 pmic_glink_ucsi_probe() function in drivers/usb/typec/ucsi/ucsi_glink.c, within the pmic_glink_altmode_probe() function in drivers/soc/qcom/pmic_glink_altmode.c, within the _devm_pmic_glink_release_client() and devm_pmic_glink_register_client() functions in drivers/soc/qcom/pmic_glink.c, within the qcom_battmgr_probe() function in drivers/power/supply/qcom_battmgr.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/1efdbf5323c9360e05066049b97414405e94e087
http://git.kernel.org/stable/c/943b0e7cc646a624bb20a68080f8f1a4a55df41c
http://git.kernel.org/stable/c/3568affcddd68743e25aa3ec1647d9b82797757b

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.