{"id":"CVE-2026-98645","revision":"3a35fdb8c4ce4cb9b8acd6540b0469fb","records":[{"revision":"3a35fdb8c4ce4cb9b8acd6540b0469fb","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98645","aliases":[],"title":"HID: winwing: fix use-after-free in force feedback teardown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: winwing: fix use-after-free in force feedback teardown\n\nwinwing_init_ff() passes the driver's private data, allocated with\ndevm_kzalloc() in winwing_probe(), as the effect context to\ninput_ff_create_memless(). The memoryless force-feedback core takes\nownership of that pointer and frees it with kfree() from\ninput_ff_destroy() (ml_ff_destroy()) when the input device is\ndestroyed.\n\nFreeing a devm-managed allocation with kfree() is an invalid free, and\nthe same object is then released again by devres when the HID device is\ntorn down, a double free. As the allocation also embeds the LED class\ndevices, their timers and work item live on freed memory and the slab\ngets corrupted. This triggers on unbind, rmmod, hot-unplug and on system\nsuspend, where the firmware cache walks the now-corrupt devres list.\nKASAN reports:\n\n  BUG: KASAN: invalid-free in input_ff_destroy\n  Allocated by task N:\n    winwing_probe\n\nPass NULL as the memless context instead and fetch the driver data from\nthe input device in winwing_play_effect(): the HID core already stores\nthe hid_device as the input device's drvdata. The force-feedback core\nthen owns nothing that it must not free.","state":0,"publishedAt":"2026-10-18T15:20:16.676+00:00","modifiedAt":"2026-10-19T09:23:14.926+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/hid/hid-winwing.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"42d020b54edc57d03749bed75976f1e962a9fbfa\",\n                            \"lessThan\": \"2b25f11ec52ea0a82334d5b83ee321f6b0a35923\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"42d020b54edc57d03749bed75976f1e962a9fbfa\",\n                            \"lessThan\": \"a1a5ad37e50ceb192c07ac7e2d7143638cd4d110\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/hid/hid-winwing.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"7.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.9\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/2b25f11ec52ea0a82334d5b83ee321f6b0a35923","https://git.kernel.org/stable/c/a1a5ad37e50ceb192c07ac7e2d7143638cd4d110"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98645","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98645","identifiers":["CVE-2026-98645"]},"retained":false,"historicalAffected":[]}],"coverage":[]}