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A local non-privileged user can make improper GPU memory processing operations  to gain access to already freed memory.

CVE-2023-4211 is a use-after-free vulnerability (CWE-416) identified in the Arm Ltd Midgard GPU Kernel Driver, specifically version r12p0. The flaw arises from improper handling of GPU memory operations, where a local non-privileged user can trigger access to memory regions that have already been freed. This can lead to unauthorized disclosure of sensitive information stored in GPU memory, as the freed memory may contain residual data from previous operations. The vulnerability requires local access with limited privileges but does not require user interaction, making it easier to exploit once local access is obtained. The CVSS v3.1 score of 5.5 reflects a medium severity with a high impact on confidentiality but no impact on integrity or availability. The vulnerability is currently not known to be exploited in the wild, and no patches have been released by Arm Ltd at the time of publication. The Midgard GPU architecture is commonly used in embedded systems and mobile devices, which means the attack surface is primarily local devices running this GPU driver. Exploiting this vulnerability could allow attackers to bypass memory protections and extract sensitive data from GPU memory, potentially aiding further local privilege escalation or data leakage attacks.

Detailed information about CVE-2023-4211: CWE-416 Use after free in Arm Ltd Midgard GPU Kernel Driver affecting Arm Ltd Midgard GPU Kernel Driver. Get real-time

CVE-2023-4211: CWE-416 Use after free in Arm Ltd Midgard GPU Kernel Driver - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2023-4211: CWE-416 Use after free in Arm Ltd Midgard GPU Kernel Driver

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