CVE-2025-47358 in Snapdragon Compute
Summary
by MITRE • 02/02/2026
Memory Corruption when user space address is modified and passed to mem_free API, causing kernel memory to be freed inadvertently.
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Analysis
by VulDB Data Team • 02/02/2026
This vulnerability represents a critical memory corruption issue that arises from improper handling of user space addresses within kernel memory management operations. The flaw occurs when a user space address undergoes modification and subsequently gets passed to the mem_free API, resulting in unintended kernel memory deallocation. This type of vulnerability falls under the category of improper input validation and memory management errors that can lead to system instability and potential privilege escalation. The issue stems from a fundamental breakdown in the kernel's address space validation mechanisms, where user provided data is not adequately sanitized before being processed by kernel memory management functions.
The technical execution of this vulnerability involves a specific sequence where user space memory addresses are manipulated and then incorrectly interpreted by kernel functions. When the mem_free API receives a modified user space address, the kernel's memory management subsystem attempts to free memory at that location without proper validation of whether the address belongs to kernel space or user space. This creates a dangerous condition where kernel memory structures could be corrupted or freed, potentially leading to system crashes, data corruption, or more severe security implications. The vulnerability demonstrates a classic case of insufficient address validation and improper memory boundary checking within kernel code.
The operational impact of this memory corruption vulnerability extends beyond simple system instability to potentially enable sophisticated attack vectors. An attacker could exploit this flaw to cause arbitrary code execution within kernel space, leading to complete system compromise. The vulnerability's potential for privilege escalation makes it particularly dangerous as it could allow unauthorized users to gain elevated system privileges. Additionally, the indirect nature of the attack through user space manipulation means that traditional user space protections may not prevent exploitation, making detection and prevention more challenging. This type of vulnerability can also lead to denial of service conditions that could affect system availability and reliability.
Mitigation strategies for this vulnerability should focus on comprehensive input validation and memory management hardening within kernel space. Implementing robust address space validation checks before any memory deallocation operations would prevent the passage of user space addresses to kernel memory management functions. The solution involves establishing clear boundaries between user and kernel memory spaces, ensuring that any address passed to mem_free or similar functions is properly validated against kernel memory regions. Security patches should include enhanced bounds checking and address validation mechanisms that align with common weakness enumerations such as CWE-125 and CWE-787, which specifically address out-of-bounds memory access and improper input validation. System administrators should implement kernel memory protection features such as kernel address space layout randomization and stack canaries to further reduce exploitation risk. The ATT&CK framework categorizes this type of vulnerability under privilege escalation techniques, specifically targeting kernel-level attacks that leverage memory corruption flaws to gain elevated system privileges.