{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98859",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.376Z",
        "datePublished": "2026-10-18T15:51:20.456Z",
        "dateUpdated": "2026-10-21T12:57:37.465Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:57:37.465Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: multitouch: stop the release timer from being rearmed on remove\n\nmt_remove() quiesces the sticky-finger timer before stopping the\nhardware:\n\n    timer_delete_sync(&td->release_timer);\n\n    sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);\n    hid_hw_stop(hdev);\n\ntimer_delete_sync() waits for a running callback and dequeues the timer,\nbut it does not stop the timer from being armed again. The transport is\nstill delivering reports at that point, and the report path rearms it:\n\n    if (app->quirks & MT_QUIRK_STICKY_FINGERS) {\n        if (td->mt_io_flags & MT_IO_SLOTS_MASK)\n            mod_timer(&td->release_timer,\n                      jiffies + msecs_to_jiffies(100));\n\nA report that arrives after timer_delete_sync() has returned therefore\nleaves the timer queued. td is allocated with devm_kzalloc() against\nhdev->dev, so it is freed when the driver is unbound, after mt_remove()\nreturns. When the timer fires afterwards, mt_expired_timeout()\ndereferences the freed td:\n\n    struct mt_device *td = timer_container_of(td, t, release_timer);\n    struct hid_device *hdev = td->hdev;\n\n    if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))\n\nSimply moving the teardown after hid_hw_stop() does not fix this on its\nown, because mt_expired_timeout() calls mt_release_contacts(), which\nwalks hdev->inputs; the timer still has to be quiesced before\nhid_hw_stop() tears the input devices down.\n\nUse timer_shutdown_sync() instead, which additionally makes any later\nmod_timer() a no-op, so neither ordering constraint has to be traded off\nagainst the other. This is the final-teardown pattern the function was\nintroduced for, and hid-wiimote already uses it for the same reason."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/hid/hid-multitouch.c"
                    ],
                    "versions": [
                        {
                            "version": "4f4001bc76fd1a138a501fbd3d68cce72cbf96ce",
                            "lessThan": "3776f34fbce990af45978f1628d2e1adc0d67d0f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4f4001bc76fd1a138a501fbd3d68cce72cbf96ce",
                            "lessThan": "1f1bd9a3117f082eb891c0986c4f0e04cd974c9a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4f4001bc76fd1a138a501fbd3d68cce72cbf96ce",
                            "lessThan": "0c19a6c1d25fd5ed66d1f80dc6f6e56cc1f0a787",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4f4001bc76fd1a138a501fbd3d68cce72cbf96ce",
                            "lessThan": "a0125ca86e405b8a704e96157a6c10ca51087652",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4f4001bc76fd1a138a501fbd3d68cce72cbf96ce",
                            "lessThan": "5acb2dace582f061aab5e14c399ac9480315f44b",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/hid/hid-multitouch.c"
                    ],
                    "versions": [
                        {
                            "version": "4.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.113",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.56",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.10",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "6.12.113"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "6.18.56"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "7.2.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/3776f34fbce990af45978f1628d2e1adc0d67d0f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1f1bd9a3117f082eb891c0986c4f0e04cd974c9a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0c19a6c1d25fd5ed66d1f80dc6f6e56cc1f0a787"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a0125ca86e405b8a704e96157a6c10ca51087652"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5acb2dace582f061aab5e14c399ac9480315f44b"
                }
            ],
            "title": "HID: multitouch: stop the release timer from being rearmed on remove",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}