CVE-2025-21466 in Snapdragon Compute
Summary
by MITRE • 07/08/2025
Memory corruption while processing a private escape command in an event trigger.
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Analysis
by VulDB Data Team • 07/22/2025
This vulnerability resides in the memory management subsystem of a software application that processes event triggers containing private escape commands. The flaw manifests during the parsing and execution of these specialized commands within trigger contexts, where improper memory handling leads to corruption of allocated memory regions. The vulnerability is particularly concerning as it occurs in the context of event processing, suggesting that legitimate users or attackers could potentially exploit this issue through crafted event data or trigger configurations. The memory corruption could result in arbitrary code execution, denial of service, or information disclosure depending on how the corrupted memory is subsequently accessed. This type of vulnerability typically arises from insufficient bounds checking or improper memory allocation/deallocation procedures when handling escape sequences within trigger processing logic. The issue represents a classic memory safety problem that aligns with common weakness enumerations such as CWE-121 which covers stack-based buffer overflow conditions, and CWE-122 which addresses heap-based buffer overflow scenarios. From an operational perspective, this vulnerability could be exploited by attackers who have the ability to inject or modify event data that triggers the affected processing logic, potentially leading to system compromise or service disruption.
The technical exploitation of this vulnerability requires understanding of the event trigger architecture and how escape commands are parsed within that context. Attackers could craft malicious event data containing specially formatted private escape commands that, when processed by the application, trigger the memory corruption. The vulnerability is likely to be triggered when the application attempts to allocate memory for processing the escape command or when it performs operations on memory regions that have already been corrupted. This type of memory corruption can manifest through various attack vectors including command injection, data manipulation, or privilege escalation scenarios. The ATT&CK framework would categorize this vulnerability under techniques such as T1059 for command and scripting interpreter and potentially T1068 for exploit for privilege escalation. The vulnerability demonstrates a failure in proper input validation and memory management practices within the trigger processing pipeline, indicating potential gaps in defensive coding practices and insufficient sanitization of user-provided data before processing.
Mitigation strategies for this vulnerability should focus on implementing robust memory management practices and input validation controls. Immediate remediation efforts should include patching the affected software components and implementing proper bounds checking for all memory allocations during escape command processing. Organizations should enhance their code review processes to identify similar patterns that could lead to memory corruption issues and establish stricter validation for event data and trigger configurations. The implementation of address space layout randomization, stack canaries, and other exploit mitigation techniques can help reduce the effectiveness of potential exploitation attempts. Additionally, monitoring systems should be enhanced to detect anomalous event processing patterns that could indicate exploitation attempts. Regular security assessments and penetration testing should be conducted to identify similar memory safety issues within the application's codebase. The vulnerability highlights the importance of adhering to secure coding practices and following industry standards such as those outlined in the CWE dictionary and NIST guidelines for memory safety and input validation. Organizations should also consider implementing automated static and dynamic analysis tools to detect similar memory corruption vulnerabilities in their software development lifecycle.