CVE-2026-89627 (GCVE-0-2026-89627)
Vulnerability from cvelistv5
Published
2026-09-11 19:45
Modified
2026-10-19 08:49
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: roccat: free buffered reports when destroying device roccat_report_event() duplicates each report with kmemdup() and stores the allocation in a circular-buffer slot. The allocation is released only when that slot is reused. The device destruction paths free struct roccat_device without releasing reports still stored in cbuf[]. This makes those allocations unreachable and leaks up to ROCCAT_CBUF_SIZE report buffers per device. Add a small destructor that frees every buffered report before freeing the device, and use it in both paths that can destroy a registered device.
References
Impacted products
Vendor Product Version
Linux Linux Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/hid-roccat.c"
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          "vendor": "Linux",
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              "version": "0",
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      "cpeApplicability": [
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              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: roccat: free buffered reports when destroying device\n\nroccat_report_event() duplicates each report with kmemdup() and stores\nthe allocation in a circular-buffer slot. The allocation is released only\nwhen that slot is reused.\n\nThe device destruction paths free struct roccat_device without releasing\nreports still stored in cbuf[]. This makes those allocations unreachable\nand leaks up to ROCCAT_CBUF_SIZE report buffers per device.\n\nAdd a small destructor that frees every buffered report before freeing the\ndevice, and use it in both paths that can destroy a registered device."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:49:59.521Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cebb20b9a29cfc90bf56e54337333084f85a69dd"
        },
        {
          "url": "https://git.kernel.org/stable/c/690da9177e64bcfda2f4c0b5b8465178e4a236d8"
        },
        {
          "url": "https://git.kernel.org/stable/c/b3cc411daa50b39ba5706492a80a5a0804d9c85f"
        },
        {
          "url": "https://git.kernel.org/stable/c/4cb3ff31d237ad1f515455c497ef07d7172d912b"
        },
        {
          "url": "https://git.kernel.org/stable/c/943b8dc2c6044c01e36395f51bb809a4b6bdfd22"
        },
        {
          "url": "https://git.kernel.org/stable/c/da00eac19feef209c9591e48c860afc2014603be"
        },
        {
          "url": "https://git.kernel.org/stable/c/fbb5a60f5c31b5625f0d89a79912fbcb2559289b"
        },
        {
          "url": "https://git.kernel.org/stable/c/bbff0ccbff360a5498075525005f6a913239a3d7"
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      ],
      "title": "HID: roccat: free buffered reports when destroying device",
      "x_generator": {
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      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89627",
    "datePublished": "2026-09-11T19:45:23.479Z",
    "dateReserved": "2026-09-11T19:38:34.738Z",
    "dateUpdated": "2026-10-19T08:49:59.521Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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