CyberRota Analysis
AI-GeneratedThe vulnerability affects OP-TEE, a Trusted Execution Environment for Linux running on Arm Cortex-A cores, specifically versions 3.3.0 to 4.10.0. It involves a resource leak in the shared memory cleanup logic that can lead to degraded system performance and potential service interruptions due to accumulated memory leaks, ultimately necessitating a reboot. Organizations utilizing OP-TEE in non-FF-A configurations should prioritize upgrading to version 4.11.0 to mitigate this issue, as no workarounds are available.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 3.3.0 and prior to version 4.11.0, a resource leak exists in OP-TEE’s shared memory cleanup logic because the function `cleanup_shm_refs()` in `core/tee/entry_std.c` fails to apply a required bitmask (`OPTEE_MSG_ATTR_TYPE_MASK`) to parameter attributes. When processing non-contiguous memory parameters from a normal-world caller, the system fails to match the attribute type in its internal switch statement and skips the necessary mobj_put() call. This results in a persistent reference leak of `mobj_reg_shm` objects, which remain on internal lists with dangling refcounts. This affects non-FF-A configurations that support non-contiguous, non-secure shared memory. Over time, these accumulated leaks progressively consume the secure-world heap, degrading the system's ability to service trusted application operations and eventually requiring a reboot to recover. Version 4.11.0 contains a patch. No known workarounds are available.
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