EUVD-2025-209629Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
Lifecycle Timeline
4DescriptionCVE.org
Memory corruption when dynamically changing the size of a previously allocated buffer while its contents are being modified.
AnalysisAI
Memory corruption in Qualcomm Snapdragon occurs when dynamically resizing a previously allocated buffer while its contents are being concurrently modified, enabling local authenticated attackers with user-level privileges to achieve high confidentiality and integrity impact with CVSS 6.5. No active exploitation has been confirmed at the time of analysis, and patch availability details require verification against the May 2026 Qualcomm security bulletin.
Technical ContextAI
This vulnerability stems from a classic buffer overflow condition (CWE-120: Buffer Copy without Checking Size of Input) involving race conditions or improper synchronization during dynamic buffer reallocation. The Snapdragon platform, Qualcomm's system-on-chip (SoC) architecture used across Android devices and embedded systems, manages memory allocation and deallocation at firmware and driver levels. When a buffer is resized while another thread or process modifies its contents, the lack of proper locking or atomic operations can corrupt heap metadata or overflow into adjacent memory regions. This is particularly dangerous in privileged code paths handling modem, GPU, or display driver operations where memory safety violations propagate to system stability.
RemediationAI
Apply the security patch released by Qualcomm in the May 2026 Security Bulletin immediately. For affected Android devices, install the latest security update provided by your device manufacturer or carrier, which will include the patched Snapdragon firmware and drivers. Until patching is possible, restrict local application execution privileges through SELinux enforcement policies and disable unnecessary hardware-accelerated features (GPU, modem extensions) if not required for core functionality; note that disabling features may impact device performance and user experience. Implement process isolation and monitor for unexpected memory access patterns using kernel-level sanitizers (KASAN) in development/testing environments to detect exploitation attempts.
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Same weakness CWE-120 – Classic Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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