CVE-2025-38253 (GCVE-0-2025-38253)
Vulnerability from cvelistv5
Published
2025-07-09 10:42
Modified
2026-08-05 12:00
Severity ?
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: wacom: fix crash in wacom_aes_battery_handler() Commit fd2a9b29dc9c ("HID: wacom: Remove AES power_supply after extended inactivity") introduced wacom_aes_battery_handler() which is scheduled as a delayed work (aes_battery_work). In wacom_remove(), aes_battery_work is not canceled. Consequently, if the device is removed while aes_battery_work is still pending, then hard crashes or "Oops: general protection fault..." are experienced when wacom_aes_battery_handler() is finally called. E.g., this happens with built-in USB devices after resume from hibernate when aes_battery_work was still pending at the time of hibernation. So, take care to cancel aes_battery_work in wacom_remove().
References
Impacted products
Vendor Product Version
Linux Linux Version: fd2a9b29dc9c4c35def91d5d1c5b470843539de6
Version: fd2a9b29dc9c4c35def91d5d1c5b470843539de6
Version: fd2a9b29dc9c4c35def91d5d1c5b470843539de6
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/wacom_sys.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a4f182ffa30c52ad1c8e12edfb8049ee748c0f1b",
              "status": "affected",
              "version": "fd2a9b29dc9c4c35def91d5d1c5b470843539de6",
              "versionType": "git"
            },
            {
              "lessThan": "57a3d82200dbeccd002244b96acad570eeeb731f",
              "status": "affected",
              "version": "fd2a9b29dc9c4c35def91d5d1c5b470843539de6",
              "versionType": "git"
            },
            {
              "lessThan": "f3054152c12e2eed1e72704aff47b0ea58229584",
              "status": "affected",
              "version": "fd2a9b29dc9c4c35def91d5d1c5b470843539de6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/wacom_sys.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "lessThan": "6.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.36",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.5",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: wacom: fix crash in wacom_aes_battery_handler()\n\nCommit fd2a9b29dc9c (\"HID: wacom: Remove AES power_supply after extended\ninactivity\") introduced wacom_aes_battery_handler() which is scheduled\nas a delayed work (aes_battery_work).\n\nIn wacom_remove(), aes_battery_work is not canceled. Consequently, if\nthe device is removed while aes_battery_work is still pending, then hard\ncrashes or \"Oops: general protection fault...\" are experienced when\nwacom_aes_battery_handler() is finally called. E.g., this happens with\nbuilt-in USB devices after resume from hibernate when aes_battery_work\nwas still pending at the time of hibernation.\n\nSo, take care to cancel aes_battery_work in wacom_remove()."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The wacom driver binds any Bluetooth HID device presenting Wacom\u0027s vendor ID via `BT_DEVICE_WACOM(HID_ANY_ID)` and hid-core\u0027s forced `HID_GROUP_WACOM`, so an attacker within Bluetooth range supplying a crafted report descriptor and pen reports reaches the vulnerable path. This matches the adjacent-network scoring used for other Wacom HID report-processing flaws.\nAC:L - The attacker device controls every step \u2014 the report descriptor that sets WACOM_QUIRK_AESPEN, the pen report with sense=0 that arms the work, and the disconnect that frees `struct wacom` \u2014 and the 30-minute delay window guarantees the work is still pending at removal. No race must be won and no uncontrollable state is required.\nPR:N - Everything happens inside kernel HID transport and driver probe/report/remove handling; no user account, credential, or capability on the target is involved. The attacker only needs their device connected to the host.\nUI:N - Once the device is connected, arming the delayed work and then tearing down the link are entirely device-driven with no action by any user on the target. Consistent with prior Wacom HID CVEs scored UI:N.\nS:U - The use-after-free corrupts kernel heap memory and executes within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The freed devm-allocated `struct wacom` is a sprayable slab object whose contents are subsequently used as a workqueue pointer, work function pointer, and `hdev` pointer, giving an attacker who grooms the slab an arbitrary-read/kernel-memory-disclosure primitive.\nI:H - `process_one_work()` invokes `work-\u003efunc()` read from the freed object and `devres_release_group()` walks stale list data invoking release callbacks, yielding control-flow hijack and arbitrary-write potential; the leftover armed timer in the timer wheel adds list-corruption write primitives.\nA:H - The commit explicitly reports \"hard crashes or \u0027Oops: general protection fault\u0027\" when the pending work fires after device removal, and the attacker can trigger this repeatedly by reconnecting and disconnecting."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:00:46.365Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a4f182ffa30c52ad1c8e12edfb8049ee748c0f1b"
        },
        {
          "url": "https://git.kernel.org/stable/c/57a3d82200dbeccd002244b96acad570eeeb731f"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3054152c12e2eed1e72704aff47b0ea58229584"
        }
      ],
      "title": "HID: wacom: fix crash in wacom_aes_battery_handler()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38253",
    "datePublished": "2025-07-09T10:42:32.059Z",
    "dateReserved": "2025-04-16T04:51:23.997Z",
    "dateUpdated": "2026-08-05T12:00:46.365Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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