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CVE-2025-59605 describes a memory corruption vulnerability in Qualcomm’s Audio Digital Signal Processor (ADSP) firmware. The flaw occurs when the ADSP processes a device identifier string – such as a device name, serial number, or hardware ID – that exceeds the maximum length expected by the internal buffer. Normally, the ADSP allocates a fixed-size buffer (e.g., 64 bytes) to hold an incoming identifier string. The firmware assumes that the string length has already been validated by the calling host driver. However, a malicious or compromised host (like a kernel driver or userspace service) can send an identifier string that is much longer than this buffer. Because no boundary check is performed before copying the string into the buffer using a function like `strcpy()` or memcpy(), the excess data overflows into adjacent memory regions. This overwrites critical control structures, function pointers, or return addresses on the stack or heap. When the ADSP later uses those corrupted data – for example, by calling a function via a corrupted pointer – it leads to arbitrary code execution within the ADSP’s privileged context. The ADSP operates at a high privilege level (often EL2 or similar) on Qualcomm SoCs, giving an attacker full control over audio processing, secure storage, and even the ability to break out into the main application processor. The vulnerability is triggered during device enumeration or when the system reads a property from a malicious peripheral. No user interaction is needed if an attacker can already execute code on the host. Exploitation typically results in a crash or a silent hijack of the ADSP. This CVE was published by NIST on June 1, 2026, with input from Qualcomm. The CVSS vector likely reflects high availability and integrity impact due to the possibility of remote code execution via local privilege escalation.
DailyCVE Form:
Platform: Qualcomm ADSP
Version: Multiple firmware
Vulnerability: Memory corruption
Severity: Critical
date: 2026-06-01
Prediction: 2026-07-15
What Undercode Say:
Trigger buffer overflow via debugfs
echo -n "$(python3 -c 'print("A"512)')" > /sys/kernel/debug/adsp/device_id
Malicious userspace tool using ioctl
cat << EOF > exploit.c
include <fcntl.h>
include <string.h>
include <sys/ioctl.h>
define ADSP_IOC_SET_ID 0x4004
int main() {
int fd = open("/dev/adsp", O_RDWR);
char buf[bash] = {0};
memset(buf, 'B', 256);
ioctl(fd, ADSP_IOC_SET_ID, buf); // overflow
return 0;
}
EOF
gcc exploit.c -o exploit && ./exploit
Exploit:
Craft oversized device identifier (e.g., 512 bytes) containing shellcode. Send via qmi or rpmsg channel to ADSP. Overflow overwrites function pointer in adjacent struct. ADSP executes shellcode, granting root privileges on host.
Protection:
Enable SMMU between host and ADSP. Validate identifier length before copy: use `strlcpy` with size bound. Isolate ADSP using TrustZone and monitor MMIO accesses. Apply Qualcomm hotfix (version ADSP_FW_2026.07).
Impact:
Complete compromise of audio DSP, bypass of secure audio paths, potential kernel privilege escalation from ADSP to AP (Application Processor), leakage of cryptographic keys stored in ADSP, persistent rootkit installation.
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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