CVE-2026-24073 in Snapdragon Compute
Summary
by MITRE • 09/17/2026
Memory corruption when processing decode statistics due to insufficient validation of offset against structure size.
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Analysis
by VulDB Data Team • 09/17/2026
The vulnerability described involves a critical memory corruption flaw arising from the inadequate validation of an offset value against the bounds of a data structure during the processing of decode statistics. This type of defect is classically categorized under CWE-120, which denotes Buffer Overflow without explicit mention of size limits, or more specifically CWE-787 when it results in out-of-bounds write access. The core technical failure lies in the application logic failing to verify that a user-supplied or internally generated offset parameter does not exceed the allocated memory footprint of the target structure. When an attacker provides an offset value larger than the permissible limit, the system proceeds to perform read or write operations at a memory address calculated by adding this invalid offset to the base pointer of the structure. This miscalculation directs execution flow into adjacent memory regions that are not intended for such access, leading to unauthorized data manipulation or control over program execution flow depending on the specific context and architecture involved.
From an operational perspective, the impact of this vulnerability is severe due to its potential to destabilize the entire application environment. If the out-of-bounds write targets metadata associated with memory allocators, it can lead to heap corruption, causing crashes that result in a denial of service for legitimate users. More critically, if the corrupted data includes function pointers or return addresses within the stack frame, an attacker may achieve arbitrary code execution on the affected system. This aligns directly with MITRE ATT&CK technique T1203, which covers Exploitation for Client Execution, as well as techniques related to memory corruption exploitation such as heap spraying or use-after-free scenarios if the corrupted structure is subsequently accessed. The lack of proper boundary checks means that even minor miscalculations in offset arithmetic can be leveraged by malicious actors to bypass standard security controls and inject shellcode or exploit existing gadgets within the binary, particularly in environments where advanced protection mechanisms like ASLR are mitigated through information leaks derived from similar memory errors.
Mitigation strategies must focus on implementing rigorous input validation and employing modern software development practices that enforce safety guarantees at compile time or runtime. Developers should replace manual offset calculations with safe abstractions provided by standard libraries that automatically handle bounds checking, such as std::vector in C++ or equivalent secure data structures in other languages. If low-level memory manipulation is unavoidable, explicit checks must be inserted to ensure that the sum of the base address and the offset remains within the allocated buffer limits before any access occurs. Furthermore, enabling compiler-based security features like Stack Canaries, Address Space Layout Randomization (ASLR), and Data Execution Prevention (DEP) can significantly reduce the exploitability of this vulnerability by making it harder for attackers to predict memory layouts or execute injected code. Regular static analysis using tools configured to detect CWE-120 patterns and dynamic fuzzing during the testing phase are essential practices to identify such off-by-one errors or larger boundary violations before deployment, ensuring that decode statistics processing remains resilient against malformed inputs designed to trigger this specific class of memory corruption defects.