CVE-2022-39115 is a medium-severity vulnerability identified in several Unisoc (Shanghai) Technologies Co., Ltd. chipsets, including SC9863A, SC9832E, SC7731E, T610, T310, T606, T760, T618, T612, T616, T770, T820, and S8000. These chipsets are commonly integrated into Android devices running Android 10 and Android 11. The vulnerability is categorized under CWE-862, which refers to missing authorization checks. Specifically, the issue exists within the Music service component of the affected devices, where a missing permission check allows a local attacker with limited privileges (low-level privileges) to trigger a denial of service (DoS) condition. The attacker does not require additional execution privileges or user interaction to exploit this vulnerability. The impact is limited to availability, as the flaw can cause the Music service to crash or become unresponsive, leading to a local denial of service. The CVSS v3.1 base score is 5.5, reflecting a medium severity level, with the vector indicating local attack vector (AV:L), low attack complexity (AC:L), requiring privileges (PR:L), no user interaction (UI:N), unchanged scope (S:U), no impact on confidentiality or integrity (C:N/I:N), and high impact on availability (A:H). There are no known exploits in the wild, and no patches or mitigation links have been provided by the vendor at the time of publication. The vulnerability is primarily a result of insufficient authorization enforcement within the Music service, which could be exploited by a local malicious app or user to disrupt service availability without escalating privileges or requiring user consent.

For European organizations, the impact of CVE-2022-39115 is primarily on the availability of the Music service on devices using affected Unisoc chipsets running Android 10 or 11. While the vulnerability does not compromise confidentiality or integrity, a local denial of service could disrupt user experience and potentially affect business operations relying on these devices for communication or media playback. In environments where mobile devices are critical for workforce productivity, such as field services, retail, or logistics, repeated or targeted exploitation could degrade operational efficiency. However, since exploitation requires local access with low privileges and does not enable privilege escalation or remote exploitation, the risk to enterprise-wide infrastructure or sensitive data is limited. The absence of known exploits in the wild further reduces immediate threat levels. Nonetheless, organizations should be aware that unpatched devices remain vulnerable to local DoS attacks, which could be leveraged in multi-stage attack scenarios or combined with other vulnerabilities. The impact is more pronounced in sectors with high reliance on mobile devices incorporating these chipsets, especially if devices are shared or exposed to untrusted users or applications.

To mitigate CVE-2022-39115, European organizations should implement the following specific measures: 1) Inventory and identify all mobile devices using Unisoc chipsets listed as affected, particularly those running Android 10 or 11. 2) Engage with device manufacturers and vendors to obtain firmware or OS updates that address the missing authorization check in the Music service; prioritize deployment of patches once available. 3) Restrict installation of untrusted or unnecessary applications on affected devices to reduce the risk of local exploitation by malicious apps. 4) Employ mobile device management (MDM) solutions to enforce application whitelisting, privilege restrictions, and monitor for abnormal service crashes or behavior indicative of exploitation attempts. 5) Educate users on the risks of installing apps from unofficial sources and the importance of device security hygiene. 6) For critical environments, consider isolating or replacing devices with affected chipsets if timely patching is not feasible. 7) Monitor device logs and security alerts for signs of local denial of service attempts targeting the Music service. These targeted mitigations go beyond generic advice by focusing on device inventory, vendor coordination, application control, and monitoring specific to the vulnerability context.