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CVE-2026-89619 (GCVE-0-2026-89619)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:45 – Updated: 2026-09-13 06:31
VLAI
Title
HID: intel-thc-hid: intel-quickspi: bound GET_REPORT response to the caller buffer
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: intel-thc-hid: intel-quickspi: bound GET_REPORT response to the caller buffer quickspi_hid_raw_request() receives the caller's buffer length in len, but quickspi_get_report() never sees it and copies the whole device-supplied response into buf regardless: memcpy(buf, qsdev->report_buf, qsdev->report_len); qsdev->report_len comes from the input report the touch controller returns, while buf is sized to whatever the caller asked hidraw for through HIDIOCGFEATURE or HIDIOCGINPUT. A response larger than that overflows buf with device-controlled content. The intel-quicki2c sibling already passes the caller length down to quicki2c_get_report() and validates the response against it before the copy. Do the same here.
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: 4138f21115aec3ebae7805ec3407c72d93558023 , < 72706b44b665679d7d60a488d8776a911f1a93f3 (git)
Affected: 4138f21115aec3ebae7805ec3407c72d93558023 , < 54e0bafc0653bdf2a6c5f5f8ad8787a820d98663 (git)
Affected: 4138f21115aec3ebae7805ec3407c72d93558023 , < 035ec4a71cb8020a927c123bbe75c2f88d614986 (git)
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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)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/intel-thc-hid/intel-quickspi/quickspi-hid.c",
            "drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.c",
            "drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "4138f21115aec3ebae7805ec3407c72d93558023",
              "versionType": "git"
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            "drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.c",
            "drivers/hid/intel-thc-hid/intel-quickspi/quickspi-protocol.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
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              "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
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                  "versionEndExcluding": "7.2.4",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
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                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: intel-thc-hid: intel-quickspi: bound GET_REPORT response to the caller buffer\n\nquickspi_hid_raw_request() receives the caller\u0027s buffer length in len, but\nquickspi_get_report() never sees it and copies the whole device-supplied\nresponse into buf regardless:\n\n    memcpy(buf, qsdev-\u003ereport_buf, qsdev-\u003ereport_len);\n\nqsdev-\u003ereport_len comes from the input report the touch controller returns,\nwhile buf is sized to whatever the caller asked hidraw for through\nHIDIOCGFEATURE or HIDIOCGINPUT.  A response larger than that overflows buf\nwith device-controlled content.\n\nThe intel-quicki2c sibling already passes the caller length down to\nquicki2c_get_report() and validates the response against it before the\ncopy.  Do the same here."
        }
      ],
      "metrics": [
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            "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 - A local attacker reaches the overflow through hidraw HIDIOCGFEATURE or HIDIOCGINPUT on /dev/hidrawN, which calls hidraw_get_report() then quickspi_hid_raw_request(). Intel QuickSPI is a PCI HID-over-SPI touch host, not a network or Bluetooth path.\nAC:L - Opening hidraw and issuing GET_REPORT with a 2-byte ioctl size is enough: hidraw_get_report() kmallocs that size and quickspi_get_report() copies the full device response. A normal touch GET_FEATURE or GET_INPUT_REPORT exceeds 2 bytes, so the overflow does not depend on a race or attacker-uncontrolled layout.\nPR:L - hidraw_open() has no capability check; access is only the hidraw node. Default 0600 is commonly relaxed by udev uaccess or seat ACLs for the logged-in user on laptops and kiosks, so an unprivileged local user can trigger it without init-namespace root.\nUI:N - The attacker opens the hidraw node and issues the ioctl themselves. No separate victim action such as mounting a filesystem or plugging in a device is required at exploit time.\nS:U - The overflow corrupts kernel heap in the HID QuickSPI GET_REPORT path on the same host. That is a standard kernel privilege-escalation impact, not a VM, IOMMU, or other security-authority crossing.\nC:H - quickspi_get_report() memcpy()s qsdev-\u003ereport_len bytes into an undersized hidraw kmalloc buffer, overflowing adjacent slab objects. That heap corruption can be turned into an arbitrary kernel read, so confidentiality impact is high even though the copied bytes originate from the touch controller.\nI:H - This is an unbounded out-of-bounds kernel heap write. The attacker chooses the destination size, and HID feature reports can be SET then GET so overflow contents are attacker-influenced. Adjacent slab corruption can yield an arbitrary write or control-flow hijack.\nA:H - Overflowing a 2-byte kmalloc object with a typical HID report corrupts neighboring heap metadata and pointers, which reliably causes a kernel oops or panic even if the attacker does not pursue code execution."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-13T06:31:57.555Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/72706b44b665679d7d60a488d8776a911f1a93f3"
        },
        {
          "url": "https://git.kernel.org/stable/c/54e0bafc0653bdf2a6c5f5f8ad8787a820d98663"
        },
        {
          "url": "https://git.kernel.org/stable/c/035ec4a71cb8020a927c123bbe75c2f88d614986"
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      ],
      "title": "HID: intel-thc-hid: intel-quickspi: bound GET_REPORT response to the caller buffer",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89619",
    "datePublished": "2026-09-11T19:45:18.073Z",
    "dateReserved": "2026-09-11T19:38:34.736Z",
    "dateUpdated": "2026-09-13T06:31:57.555Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-89619",
      "date": "2026-09-16",
      "epss": "0.00136",
      "percentile": "0.03432"
    },
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-13T06:59:27+00:00",
      "cve": "CVE-2026-89619",
      "id": "CVE-2026-89619",
      "initial_release_date": "2026-09-11T19:45:18.073000+00:00",
      "product_status:known_affected": "2",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: Buffer overflow in intel-quickspi driver via oversized HID report",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89619.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-16T00:01:34Z",
      "cve": "CVE-2026-89619",
      "id": "CVE-2026-89619",
      "initial_release_date": "2026-09-12T16:24:54Z",
      "product_status:known_not_affected": "353",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-89619",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-89619.json",
      "version": "5"
    }
  }
}



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  • 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.
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  • 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.


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