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CVE-2025-59614 is a memory corruption vulnerability affecting multiple Qualcomm Snapdragon platforms, including Snapdragon Compute, Snapdragon Industrial IOT, and Windows Compute subsystems. The flaw resides in the firmware routine that processes hardware‑random‑number‑generator commands. When a software component (e.g., a kernel driver or a trusted application) issues an RNG command, the firmware writes the generated random data into a caller‑supplied output buffer. However, the firmware does not validate that the buffer is large enough to hold the entire response. An attacker who can send a specially crafted RNG command with an output buffer that is too small triggers an out‑of‑bounds write: the firmware writes random data past the end of the allocated buffer, corrupting adjacent memory regions.
The vulnerability is classified as CWE‑787 (Out‑of‑bounds Write). To succeed, the attacker needs local access and high privileges (e.g., already having root or system‑level rights). The attack complexity is low, and no user interaction is required. The overflow can overwrite critical kernel structures, driver data, or even return addresses, potentially leading to arbitrary code execution in the most privileged context. Even if code execution is not possible, the corruption often results in a denial of service (system crash or instability).
The issue was reported to Qualcomm in June 2025 and publicly disclosed in June 2026 as part of the June 2026 Security Bulletin. No public exploit is currently available, but the vulnerability is considered easy to exploit once the exact command and buffer sizes are known. The affected platforms include Snapdragon Compute (various SoCs), FastConnect 6900/7800, and Windows Compute devices.
DailyCVE Form:
Platform: Qualcomm Snapdragon
Version: Compute/FastConnect/WinCompute
Vulnerability: Memory Corruption
Severity: Medium
date: 2026-06-01
Prediction: June 2026 patch
What Undercode Say:
Analytics (Bash & Code):
Check system for vulnerable RNG command interface (example using Qualcomm diag tool) diag_command -c "RNG_REQ" -o small_buf.bin Force under‑size buffer dmesg | grep -i "buffer overflow" Look for corruption indicators Monitor for unexpected memory faults cat /proc/sys/kernel/panic_on_oops
// Vulnerable pattern (pseudo‑code from firmware)
void process_rng_command(void cmd, void out_buf, size_t out_len) {
uint8_t rng_data[bash]; // RNG produces 256 bytes of random data
generate_random(rng_data, 256); // Always writes 256 bytes
memcpy(out_buf, rng_data, out_len); // ❌ No check: out_len may be < 256
}
Exploit:
- Identify the device’s RNG command interface (e.g., Qualcomm DIAG node `/dev/diag` or a custom ioctl).
- Send an RNG request while specifying an output buffer size less than the firmware’s expected response length (e.g., 64 bytes instead of 256).
- Trigger the out‑of‑bounds write. Successful corruption can overwrite a function pointer or a saved return address, leading to arbitrary code execution with kernel privileges.
Protection:
- Install the June 2026 Qualcomm Security Bulletin patches (contact device OEM).
- Enable memory‑protection mechanisms (SMEP, SMAP, PAN) where available.
- Validate all buffer lengths before passing them to the firmware (e.g., in the device driver).
Impact:
- Arbitrary code execution (kernel or hypervisor context).
- Denial of service (kernel panic / device crash).
- Information disclosure (overwritten memory may leak sensitive data).
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Sources:
Reported By: nvd.nist.gov
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