Listen to this Post
How the CVE Works
CVE-2025-21426 is a memory corruption vulnerability in Qualcomm’s camera driver, triggered when processing a Test Pattern Generator (TPG) write request. The flaw occurs due to improper input validation, leading to a buffer overflow. Attackers can exploit this by sending a maliciously crafted TPG command, causing arbitrary code execution in the kernel context. The vulnerability stems from insufficient bounds checking when handling camera firmware commands, allowing overwriting adjacent memory regions. Exploitation requires local access but can escalate privileges to root. The issue affects multiple Qualcomm chipsets due to shared driver code.
DailyCVE Form
Platform: Qualcomm chipsets
Version: Multiple (kernel driver)
Vulnerability: Memory corruption
Severity: Critical
Date: 07/08/2025
Prediction: Patch by 08/15/2025
What Undercode Say
Analytics:
dmesg | grep "camera_tpg_fault" adb shell cat /proc/kmsg | grep "qualcomm_cam"
Exploit:
void trigger_tpg_overflow() {
ioctl(fd, CAM_TPG_WRITE, malformed_payload);
}
Protection from this CVE:
- Disable unused camera interfaces.
- Apply Qualcomm’s pending patch.
- Restrict kernel memory writes.
Impact:
- Kernel privilege escalation.
- Persistent root access.
- Device compromise.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
