CVE-2026-31625

/* * Conceptual PoC for CVE-2026-31625 * This code demonstrates the vulnerable logic in the alps driver. * Triggering this requires a local environment and specific HID hardware interaction. */ #include <linux/hid.h> // Simulated vulnerable function structure static int alps_raw_event_vulnerable(struct hid_device *hdev, struct hid_report *report, u8 *data, int size) { // VULNERABILITY: Missing check for HID_CLAIMED_INPUT // if (!(hdev->claimed & HID_CLAIMED_INPUT)) // return 0; // If the input device is not claimed, the following access might lead to NULL pointer dereference // depending on the internal state of hdev->driver_data or input_dev struct input_dev *input = hdev->driver_data; // Hypothetical access // Processing raw event without checking if input is valid // ... return 0; } /* * Fix: The patch adds the following guard at the beginning of the function: * if (!(hdev->claimed & HID_CLAIMED_INPUT)) * return 0; */

{"cve": {"id": "CVE-2026-31625", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-04-24T15:16:41.807", "lastModified": "2026-04-27T21:14:33.073", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: alps: fix NULL pointer dereference in alps_raw_event()\n\nCommit ecfa6f34492c (\"HID: Add HID_CLAIMED_INPUT guards in raw_event\ncallbacks missing them\") attempted to fix up the HID drivers that had\nmissed the previous fix that was done in 2ff5baa9b527 (\"HID: appleir:\nFix potential NULL dereference at raw event handle\"), but the alps\ndriver was missed.\n\nFix this up by properly checking in the hid-alps driver that it had been\nclaimed correctly before attempting to process the raw event."}], "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": "CWE-476"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.6.136", "matchCriteriaId": "73306563-4D86-4EFC-8B84-FAF53D5FB6A5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.12.83", "matchCriteriaId": "7F0AE5B5-23AC-4DCC-B37A-51CA1DAE7BA8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.24", "matchCriteriaId": "8126B8B8-6D0B-4443-86C1-672AEE893555"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "6.19.14", "matchCriteriaId": "D6A8A074-BBF4-4803-ABED-519A839435BB"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.0.1", "matchCriteriaId": "9B5888AB-7403-4335-89E4-21CC0B48366A"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0091dfa542a362c178a7e9393097138a57d327d1", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/1badfc4319224820d5d890f8eab6aa52e4e83339", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/4b618248d2307a219d9431a730cfe1156c8e3386", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/8eed7bce7a4c41ab28ee4891103623a12fd41611", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/c8cc765253ad89ccc106a7bdeb5aeac6cf963078", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/ee2cb3ddfdca949dbc0c3f796ed5a439f0efc9f6", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}]}}