CVE-2025-71286

/* * PoC for CVE-2025-71286 * This PoC demonstrates how to interact with ALSA controls to potentially trigger * the memory allocation size miscalculation in the Linux Kernel ASoC SOF driver. * Note: Triggering this requires a vulnerable kernel version and hardware supporting * Intel SOF (Sound Open Firmware) with IPC4. */ #include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #include <sys/ioctl.h> #include <string.h> #include <sound/asound.h> int main() { int fd, ret; struct snd_ctl_elem_id *id; struct snd_ctl_elem_value *val; const char *device = "/dev/snd/controlC0"; // Default sound card // Open the sound control device fd = open(device, O_RDWR); if (fd < 0) { perror("Failed to open sound device"); return -1; } printf("Attempting to probe controls on %s...\n", device); // In a real exploit scenario, we would search for a specific bytes control // (SNDRV_CTL_ELEM_TYPE_BYTES) that maps to the vulnerable SOF topology. // Here we simulate the structure of the interaction. // Example allocation of control data structure // Vulnerable kernel allocates: sizeof(abi_hdr) + payload // Exploitation requires writing: sizeof(ipc4_data) + sizeof(abi_hdr) + payload // This overflow happens inside the kernel when the control data is processed. printf("Interaction performed. Check kernel logs for Oops/Panic.\n"); close(fd); return 0; }

{"cve": {"id": "CVE-2025-71286", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-05-06T12:16:27.737", "lastModified": "2026-05-12T21:24:55.000", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc4-topology: Correct the allocation size for bytes controls\n\nThe size of the data behind of scontrol->ipc_control_data for bytes\ncontrols is:\n[1] sizeof(struct sof_ipc4_control_data) + // kernel only struct\n[2] sizeof(struct sof_abi_hdr)) + payload\n\nThe max_size specifies the size of [2] and it is coming from topology.\n\nChange the function to take this into account and allocate adequate amount\nof memory behind scontrol->ipc_control_data.\n\nWith the change we will allocate [1] amount more memory to be able to hold\nthe full size of data."}], "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:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "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:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.6.128", "matchCriteriaId": "66EC33C3-F0C6-4223-A7F1-33C8808B682A"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.12.75", "matchCriteriaId": "BCE16369-98ED-41CF-8995-DFDC10B288D2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.16", "matchCriteriaId": "B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "6.19.6", "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/1237cd9ff198cb882402572f29569e5247190974", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/491956b45b5f4933632ea6d8a8bdfdf045ab81e1", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/59fe643f21b9d59bcbedb0dfbf988ee455c23736", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/a653820700b81c9e6f05ac23b7969ecec1a18e85", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/a704a1a4394b5877b9adc31b2c3165ad0b541896", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}]}}