CVE-2026-21379 in Snapdragon Compute
Summary
by MITRE • 07/06/2026
Memory Corruption when allocating memory with sizes that exceed the maximum allowed value.
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Analysis
by VulDB Data Team • 07/06/2026
Memory corruption vulnerabilities arising from improper handling of allocation requests exceeding maximum allowed values represent critical flaws in software memory management systems that can lead to arbitrary code execution and system compromise. This type of vulnerability typically occurs when applications fail to properly validate or sanitize memory allocation parameters before processing them, creating opportunities for attackers to manipulate memory structures through crafted inputs. The underlying technical flaw manifests when the system attempts to allocate memory blocks larger than what the platform or implementation permits, often resulting in undefined behavior that can be exploited to overwrite adjacent memory regions or corrupt heap metadata.
The operational impact of such vulnerabilities extends beyond simple application crashes to encompass full system compromise and data breaches across multiple threat scenarios. When memory allocation functions receive oversized parameters, they may either silently truncate values, cause buffer overflows, or trigger memory corruption that allows attackers to execute malicious code with the privileges of the affected process. These vulnerabilities frequently appear in systems handling untrusted input such as file parsing, network protocol processing, or user data manipulation where allocation sizes are derived from external sources without proper bounds checking. The exploitation potential increases significantly when these flaws occur in critical system components like memory managers, heap allocators, or cryptographic libraries that handle sensitive operations.
Security professionals should implement comprehensive mitigation strategies focusing on input validation, memory safety mechanisms, and runtime protections to address these vulnerabilities effectively. The most effective approaches include implementing strict size validation checks before any allocation operations, utilizing safe memory management functions that automatically detect and prevent oversized requests, and deploying runtime safeguards such as stack canaries, address space layout randomization, and heap integrity checking. Organizations should also consider adopting memory-safe programming languages or compiler-based protections like undefined behavior sanitizers and control flow integrity checks to reduce the attack surface. According to cwe standards this vulnerability maps directly to cwe-122 heap-based buffer overflow and cwe-129 improper validation of array indices, while attack techniques align with mitre att&ck tactics including privilege escalation through memory corruption and execution of malicious code via heap spraying methods that leverage these fundamental allocation flaws.