CVE-2022-32618 in Android
Summary
by MITRE • 11/09/2022
In typec, there is a possible out of bounds write due to an incorrect calculation of buffer size. This could lead to local escalation of privilege, for an attacker who has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07262454; Issue ID: ALPS07262454.
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Analysis
by VulDB Data Team • 05/31/2026
The vulnerability identified as CVE-2022-32618 resides within the typec component of a system, representing a critical out-of-bounds write flaw that stems from erroneous buffer size calculation. This typec subsystem typically manages type-c port operations and power delivery protocols, making it a crucial element in device power management and connectivity functions. The flaw manifests when the system incorrectly computes the buffer size required for processing type-c related data, leading to memory corruption that can be exploited to execute arbitrary code with elevated privileges.
The technical implementation of this vulnerability involves a classic buffer overflow scenario where insufficient bounds checking occurs during memory allocation calculations. When the typec driver processes incoming data packets or configuration parameters, it fails to properly validate the expected buffer dimensions against the actual data being processed. This miscalculation results in a write operation that extends beyond the allocated memory boundaries, potentially overwriting adjacent memory regions including critical system structures, function pointers, or privilege control data. The vulnerability specifically affects systems where physical access is possible, as the exploitation requires direct hardware interaction to trigger the problematic code path.
The operational impact of this vulnerability is severe, particularly for devices that rely on type-c interfaces for power delivery and data transfer. An attacker with physical access to a device can leverage this flaw to achieve local privilege escalation without requiring additional execution privileges or user interaction. This makes the vulnerability particularly dangerous in environments where physical security is compromised, such as public devices, unattended workstations, or mobile devices that may be left unattended. The attack vector does not require any user interaction, making it especially insidious as it can be exploited automatically upon device connection or power state changes. The vulnerability's impact aligns with CWE-121, which describes stack-based buffer overflow conditions, and represents a direct threat to system integrity and privilege separation mechanisms.
Mitigation strategies for CVE-2022-32618 should focus on implementing proper bounds checking mechanisms within the typec driver code and ensuring that buffer size calculations account for all possible data scenarios. The patch ALPS07262454 addresses this issue by correcting the buffer size calculation logic and adding additional validation checks to prevent overflow conditions. Organizations should prioritize applying this patch to all affected systems and consider implementing additional security measures such as memory protection mechanisms, runtime integrity checks, and hardware-based security features. The vulnerability demonstrates the importance of proper input validation and memory management in kernel-level drivers, aligning with ATT&CK technique T1068 which covers the exploitation of system privileges through kernel vulnerabilities. Security teams should also monitor for similar patterns in other device drivers and implement comprehensive testing procedures that include boundary condition testing to prevent similar vulnerabilities from being introduced in future code releases.