CVE-2023-20616

Vulnerability

In the Mediatek ion driver, a type confusion vulnerability (CVE-2023-20616) exists that can lead to an out-of-bounds read. The issue arises due to improper handling of data types within the ion memory management subsystem. This vulnerability affects Mediatek chipsets and requires System execution privileges to exploit. The patch ID is ALPS07560720 [1].

Exploitation

An attacker with System execution privileges can exploit the type confusion to trigger an out-of-bounds read. No user interaction is required; the attacker simply needs to execute code with sufficient privileges to interact with the ion driver in a way that causes the type confusion [1].

Impact

Successful exploitation results in local escalation of privilege. The out-of-bounds read may allow the attacker to access sensitive kernel memory, potentially leading to further compromise of the system [1].

Mitigation

Mediatek has released a patch identified as ALPS07560720, which is included in the February 2023 Product Security Bulletin. Device OEMs have been notified and are expected to distribute the update. Users should apply the patch from their device manufacturer as soon as it becomes available [1].