{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-53651",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-10-07T15:16:59.660Z",
        "datePublished": "2025-10-07T15:19:47.832Z",
        "dateUpdated": "2026-08-05T09:15:22.206Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T09:15:22.206Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: exc3000 - properly stop timer on shutdown\n\nWe need to stop the timer on driver unbind or probe failures, otherwise\nwe get UAF/Oops."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "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"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:L - The free is triggered by a local operation — driver unbind via sysfs, module unload, or a bind-induced probe failure — and the arming side is a local I2C touch controller; there is no network-reachable path to this driver.\nAC:L - The 100ms timer window can be attacked repeatedly by looping bind/unbind while the controller emits error frames, and the probe-failure variant leaves the timer armed deterministically during the multi-second vendor-query retry loop, so the attacker drives both sides of the race.\nPR:L - An unprivileged local user can reach the vulnerable object through the world-readable fw_version/model/type sysfs attributes that drive I2C vendor requests and touch-frame handling; consistent with kernel CNA precedent, driver unbind/remove UAFs of this class are scored at low privilege rather than root.\nUI:N - No victim action is required — the attacker performs the unbind/rebind itself, and the probe-failure variant fires autonomously when the controller misbehaves.\nS:U - The use-after-free is contained within the kernel's own security authority with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The freed slab object is reallocatable, and the timer callback reads `data->input` and MT slot state out of freed memory, while `expire_timers()` reads the call target from it — giving a path to disclose arbitrary kernel memory.\nI:H - `fn = timer->function` is loaded from the freed object and immediately called, and `detach_timer()` performs hlist pointer writes through it, yielding a controlled indirect call and write primitive suitable for privilege escalation.\nA:H - Even unexploited, the dangling timer dereferences freed memory 100ms after unbind or probe failure, producing the UAF/Oops reported in the commit message and crashing the kernel."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/input/touchscreen/exc3000.c"
                    ],
                    "versions": [
                        {
                            "version": "7e577a17f2eefeef32f1106ebf91e7cd143ba654",
                            "lessThan": "526a177ac6353d65057eadb5d6edafc168f64484",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7e577a17f2eefeef32f1106ebf91e7cd143ba654",
                            "lessThan": "bee57c20fc0ca5ef9b9a53a0335eab2ac9e9cae1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7e577a17f2eefeef32f1106ebf91e7cd143ba654",
                            "lessThan": "79c81d137d36f9635bbcbc3916c0cccb418a61dd",
                            "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/input/touchscreen/exc3000.c"
                    ],
                    "versions": [
                        {
                            "version": "4.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.20",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.2.3",
                            "lessThanOrEqual": "6.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.3",
                            "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": "4.15",
                                    "versionEndExcluding": "6.1.20"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.2.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.3"
                                }
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/526a177ac6353d65057eadb5d6edafc168f64484"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bee57c20fc0ca5ef9b9a53a0335eab2ac9e9cae1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/79c81d137d36f9635bbcbc3916c0cccb418a61dd"
                }
            ],
            "title": "Input: exc3000 - properly stop timer on shutdown",
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}