CVE-2023-53651 (GCVE-0-2023-53651)

Vulnerability from cvelistv5 – Published: 2025-10-07 15:19 – Updated: 2026-08-05 09:15
VLAI
Title
Input: exc3000 - properly stop timer on shutdown
Summary
In the Linux kernel, the following vulnerability has been resolved: Input: exc3000 - properly stop timer on shutdown We need to stop the timer on driver unbind or probe failures, otherwise we get UAF/Oops.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7e577a17f2eefeef32f1106ebf91e7cd143ba654 , < 526a177ac6353d65057eadb5d6edafc168f64484 (git)
Affected: 7e577a17f2eefeef32f1106ebf91e7cd143ba654 , < bee57c20fc0ca5ef9b9a53a0335eab2ac9e9cae1 (git)
Affected: 7e577a17f2eefeef32f1106ebf91e7cd143ba654 , < 79c81d137d36f9635bbcbc3916c0cccb418a61dd (git)
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Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 6.1.20 , ≤ 6.1.* (semver)
Unaffected: 6.2.3 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
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          "product": "Linux",
          "programFiles": [
            "drivers/input/touchscreen/exc3000.c"
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              "value": "AV:L - The free is triggered by a local operation \u2014 driver unbind via sysfs, module unload, or a bind-induced probe failure \u2014 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 \u2014 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\u0027s 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-\u003einput` and MT slot state out of freed memory, while `expire_timers()` reads the call target from it \u2014 giving a path to disclose arbitrary kernel memory.\nI:H - `fn = timer-\u003efunction` 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."
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53651",
    "datePublished": "2025-10-07T15:19:47.832Z",
    "dateReserved": "2025-10-07T15:16:59.660Z",
    "dateUpdated": "2026-08-05T09:15:22.206Z",
    "state": "PUBLISHED"
  },
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:18:29+00:00",
      "cve": "CVE-2023-53651",
      "id": "CVE-2023-53651",
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      "current_release_date": "2026-07-26T16:47:13Z",
      "cve": "CVE-2023-53651",
      "id": "CVE-2023-53651",
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      "title": "SUSE CVE CVE-2023-53651",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53651.json",
      "version": "20"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.