GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-89620 (GCVE-0-2026-89620)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:45 – Updated: 2026-09-13 06:31
VLAI
Title
HID: intel-thc-hid: intel-quickspi: validate report size before copy
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: intel-thc-hid: intel-quickspi: validate report size before copy write_cmd_to_txdma() builds an output report in qsdev->report_buf, a heap buffer allocated in quickspi_alloc_report_buf() to the device-descriptor derived max_report_len (a few hundred bytes for a touch controller). It copies the caller-supplied report into that buffer: memcpy(write_buf->content, report_buf, report_buf_len); The HID core caps a report at HID_MAX_BUFFER_SIZE (16384) by default, and quickspi_hid_ll_driver does not set max_buffer_size, so the length reaches the driver unbounded. A hidraw SET_REPORT/SET_FEATURE ioctl carrying a report larger than max_report_len therefore overflows report_buf with attacker-controlled length and content. Record the report_buf allocation size and reject reports that do not fit before copying, matching the equivalent guard in the intel-quicki2c sibling (quicki2c_init_write_buf()) and the hid-goodix-spi fix. write_cmd_to_txdma() writes the output report header ahead of the content in the same buffer, so size the allocation to cover the header as well. That keeps the added bound from rejecting a maximum-sized report.
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 CPE status
Linux Linux Affected: 9d8d51735a3af40b722346931a6a1e50227df4b5 , < 6fcefe71aeb524f6e77fe586fe85d873745e917c (git)
Affected: 9d8d51735a3af40b722346931a6a1e50227df4b5 , < ee8ad1bb1e96164d51089b1182f1bd5f187e7baa (git)
Affected: 9d8d51735a3af40b722346931a6a1e50227df4b5 , < a59cf84441f9a17323c89452cec2bf16724c48a9 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 6.18.50 , ≤ 6.18.* (semver)
Unaffected: 7.2.4 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c",
            "drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h",
            "drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6fcefe71aeb524f6e77fe586fe85d873745e917c",
              "status": "affected",
              "version": "9d8d51735a3af40b722346931a6a1e50227df4b5",
              "versionType": "git"
            },
            {
              "lessThan": "ee8ad1bb1e96164d51089b1182f1bd5f187e7baa",
              "status": "affected",
              "version": "9d8d51735a3af40b722346931a6a1e50227df4b5",
              "versionType": "git"
            },
            {
              "lessThan": "a59cf84441f9a17323c89452cec2bf16724c48a9",
              "status": "affected",
              "version": "9d8d51735a3af40b722346931a6a1e50227df4b5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c",
            "drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h",
            "drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.50",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.4",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: intel-thc-hid: intel-quickspi: validate report size before copy\n\nwrite_cmd_to_txdma() builds an output report in qsdev-\u003ereport_buf, a heap\nbuffer allocated in quickspi_alloc_report_buf() to the device-descriptor\nderived max_report_len (a few hundred bytes for a touch controller).  It\ncopies the caller-supplied report into that buffer:\n\n    memcpy(write_buf-\u003econtent, report_buf, report_buf_len);\n\nThe HID core caps a report at HID_MAX_BUFFER_SIZE (16384) by default, and\nquickspi_hid_ll_driver does not set max_buffer_size, so the length reaches\nthe driver unbounded.  A hidraw SET_REPORT/SET_FEATURE ioctl carrying a\nreport larger than max_report_len therefore overflows report_buf with\nattacker-controlled length and content.\n\nRecord the report_buf allocation size and reject reports that do not fit\nbefore copying, matching the equivalent guard in the intel-quicki2c\nsibling (quicki2c_init_write_buf()) and the hid-goodix-spi fix.\n\nwrite_cmd_to_txdma() writes the output report header ahead of the content\nin the same buffer, so size the allocation to cover the header as well.\nThat keeps the added bound from rejecting a maximum-sized report."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - An unprivileged local process reaches write_cmd_to_txdma() via hidraw write() or HIDIOCSOUTPUT/HIDIOCSFEATURE ioctls on the Intel THC HIDSPI touch controller\u0027s /dev/hidraw node; this is an onboard PCI device, not a network or USB-plug path.\nAC:L - A single SET_REPORT/SET_FEATURE with a length between the device-descriptor max_report_len (typically a few hundred bytes) and HID_MAX_BUFFER_SIZE (16384) deterministically overflows report_buf with attacker-chosen bytes; no race or uninfluenced condition is required.\nPR:L - hidraw_open() performs no capability or namespace checks, and systemd uaccess grants the seated user access to /dev/hidraw*, so a normal unprivileged local account can trigger the overflow.\nUI:N - The attacker opens the hidraw node and issues the ioctl or write themselves; no separate victim action is required.\nS:U - The overflow corrupts kernel heap in the host HID/THC driver and any resulting privilege escalation stays within the same kernel security authority.\nC:H - The memcpy writes attacker-controlled data past a small heap buffer (up to ~16KB), which can corrupt adjacent objects and be turned into an arbitrary kernel read primitive.\nI:H - The same attacker-controlled heap overflow can overwrite neighboring heap metadata and objects, enabling an arbitrary write and kernel control-flow hijack.\nA:H - Out-of-bounds heap writes of this size reliably cause kernel oops, panic, or SLUB corruption, and the request can be repeated at will."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-13T06:31:59.782Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6fcefe71aeb524f6e77fe586fe85d873745e917c"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee8ad1bb1e96164d51089b1182f1bd5f187e7baa"
        },
        {
          "url": "https://git.kernel.org/stable/c/a59cf84441f9a17323c89452cec2bf16724c48a9"
        }
      ],
      "title": "HID: intel-thc-hid: intel-quickspi: validate report size before copy",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89620",
    "datePublished": "2026-09-11T19:45:18.758Z",
    "dateReserved": "2026-09-11T19:38:34.736Z",
    "dateUpdated": "2026-09-13T06:31:59.782Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-89620",
      "date": "2026-09-16",
      "epss": "0.00161",
      "percentile": "0.05732"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-89620\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-09-11T20:19:47.280\",\"lastModified\":\"2026-09-13T07:17:27.557\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nHID: intel-thc-hid: intel-quickspi: validate report size before copy\\n\\nwrite_cmd_to_txdma() builds an output report in qsdev-\u003ereport_buf, a heap\\nbuffer allocated in quickspi_alloc_report_buf() to the device-descriptor\\nderived max_report_len (a few hundred bytes for a touch controller).  It\\ncopies the caller-supplied report into that buffer:\\n\\n    memcpy(write_buf-\u003econtent, report_buf, report_buf_len);\\n\\nThe HID core caps a report at HID_MAX_BUFFER_SIZE (16384) by default, and\\nquickspi_hid_ll_driver does not set max_buffer_size, so the length reaches\\nthe driver unbounded.  A hidraw SET_REPORT/SET_FEATURE ioctl carrying a\\nreport larger than max_report_len therefore overflows report_buf with\\nattacker-controlled length and content.\\n\\nRecord the report_buf allocation size and reject reports that do not fit\\nbefore copying, matching the equivalent guard in the intel-quicki2c\\nsibling (quicki2c_init_write_buf()) and the hid-goodix-spi fix.\\n\\nwrite_cmd_to_txdma() writes the output report header ahead of the content\\nin the same buffer, so size the allocation to cover the header as well.\\nThat keeps the added bound from rejecting a maximum-sized report.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c\",\"drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h\",\"drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"9d8d51735a3af40b722346931a6a1e50227df4b5\",\"lessThan\":\"6fcefe71aeb524f6e77fe586fe85d873745e917c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9d8d51735a3af40b722346931a6a1e50227df4b5\",\"lessThan\":\"ee8ad1bb1e96164d51089b1182f1bd5f187e7baa\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9d8d51735a3af40b722346931a6a1e50227df4b5\",\"lessThan\":\"a59cf84441f9a17323c89452cec2bf16724c48a9\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c\",\"drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h\",\"drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.50\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.4\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/6fcefe71aeb524f6e77fe586fe85d873745e917c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a59cf84441f9a17323c89452cec2bf16724c48a9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ee8ad1bb1e96164d51089b1182f1bd5f187e7baa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-09-14T10:29:48+00:00",
      "cve": "CVE-2026-89620",
      "id": "CVE-2026-89620",
      "initial_release_date": "2026-09-11T00:00:00+00:00",
      "product_status:known_affected": "185",
      "product_status:known_not_affected": "91",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: HID: intel-thc-hid: intel-quickspi: validate report size before copy",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89620.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-16T00:01:33Z",
      "cve": "CVE-2026-89620",
      "id": "CVE-2026-89620",
      "initial_release_date": "2026-09-12T16:24:52Z",
      "product_status:known_not_affected": "353",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-89620",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-89620.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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

Author Source Type Date Other

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.