MediaTek Audio HAL Privilege Escalation and Info Disclosure

Local privilege escalation in the MediaTek Audio Hardware Abstraction Layer (HAL) allows an attacker who has already obtained System-level privilege to further escalate to higher privileges via a use-after-free condition (CWE-416). The vulnerability affects over 65 MediaTek chipset models spanning Android smartphones, tablets, IoT, and connected-device SoCs. No public exploit code or CISA KEV listing exists at time of analysis; however, the broad chipset surface across Android device families makes this relevant for any organization managing large Android fleets.

Privilege escalation via use-after-free in MediaTek's Android Audio Hardware Abstraction Layer (Audio HAL) affects over 65 distinct chipset families spanning mobile, tablet, and IoT SoCs. An attacker who has already obtained System-level privilege on a device running an affected MediaTek chipset can trigger the UAF condition to escalate further - gaining full control over confidentiality, integrity, and availability without any user interaction. No public exploit or active exploitation has been identified at time of analysis; the patch is available through MediaTek's September 2026 product security bulletin.

Local privilege escalation in MediaTek's Audio Hardware Abstraction Layer (HAL) on Android devices allows an attacker who already holds System-level privilege to further escalate access through improper input validation, achieving full confidentiality, integrity, and availability compromise of the affected device. The vulnerability spans 57 distinct MediaTek chipsets across the MT6xxx and MT8xxx families and is addressed in MediaTek's September 2026 security bulletin under Patch ID ALPS11087540 (Issue ID: MSV-8246). No public exploit code or active exploitation has been identified at time of analysis, and EPSS places exploitation probability at 0.13%.

Local information disclosure in MediaTek's Audio Hardware Abstraction Layer (HAL) exposes sensitive data to an attacker who has already escalated to System privilege on an affected Android device. Improper input validation (CWE-35 path-traversal class) in the audio subsystem allows a System-level process to read confidentiality-critical data it should not have access to, with no user interaction required. No public exploit code and no CISA KEV listing exist at time of analysis; SSVC assigns exploitation status 'none' and technical impact 'partial', positioning this as a post-compromise data-harvesting primitive rather than a primary attack vector.

Local information disclosure in MediaTek's Audio Hardware Abstraction Layer affects 63 distinct chipsets, from MT6761 to MT8910, allowing a process already operating at Android System privilege to bypass an absent permission check and extract audio HAL data without authorization. Patch ID ALPS11087632 (Issue MSV-8244) addresses the missing authorization gate, and MediaTek published remediation through the September 2026 security bulletin. SSVC assessment confirms no known exploitation and non-automatable attack path; no public exploit code identified at time of analysis.