CVE-2022-48509

Vulnerability

A race condition exists in Huawei Share due to multi-thread access to mutually exclusive resources. This vulnerability affects devices running EMUI and Magic UI versions as indicated in the July 2023 security bulletin [1]. The exact affected version list is not detailed in the available references beyond the general bulletin, but the bulletin includes this CVE as a Huawei patch [1].

Exploitation

An attacker needs to trigger the race window by creating concurrent access to a shared resource in Huawei Share. The attack likely requires local access or ability to invoke Share functionality with multiple threads or processes racing for the same resource. The specific sequence of steps is not disclosed in the references [1].

Impact

Successful exploitation of this vulnerability causes the program to exit abnormally, resulting in a denial of service (availability impact). The description notes the race condition leads to abnormal termination, but no other CIA impacts (confidentiality or integrity) are mentioned [1].

Mitigation

Huawei released a security update in July 2023 that includes a fix for this vulnerability [1]. Users should apply the latest EMUI or Magic UI update from Huawei's official channels. No workaround is provided in the references [1].