CVE-2026-64565 (GCVE-0-2026-64565)

Vulnerability from cvelistv5 – Published: 2026-08-04 06:23 – Updated: 2026-08-19 16:28
VLAI
Title
Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()
Summary
In the Linux kernel, the following vulnerability has been resolved: Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data() The `ims_pcu_process_data()` processes incoming URB data byte by byte. However, it fails to check if the `read_pos` index exceeds IMS_PCU_BUF_SIZE. If a malicious USB device sends a packet larger than IMS_PCU_BUF_SIZE, `read_pos` will increment indefinitely. Moreover, since `read_pos` is located immediately after `read_buf`, the attacker can overwrite `read_pos` itself to arbitrarily control the index. This manipulated `read_pos` is subsequently used in `ims_pcu_handle_response()` to copy data into `cmd_buf`, leading to a heap buffer overflow. Specifically, an attacker can overwrite the `cmd_done.wait.head` located at offset 136 relative to `cmd_buf` in the `ims_pcu_handle_response()`. Consequently, when the driver calls `complete(&pcu->cmd_done)`, it triggers a control flow hijack by using the manipulated pointer. Fix this by adding a bounds check for `read_pos` before writing to `read_buf`. If the packet is too long, discard it, log a warning, and reset the parser state. [dtor: factor out resetting packet state, reset checksum as well]
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 628329d52474323938a03826941e166bc7c8eff4 , < 06cfff93fd40441292567b999091beab11c74504 (git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < 992a7173364dcf63e30012af43da3c2f279839f9 (git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < 3a801bc75ba1d121d0ed60e7234f93ba5651d87d (git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < 40bbbf2e91fd60715525bf0405c67876af817edf (git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49 (git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < d03a740e087de7dcb2a26dc1123377bd3d1d84ca (git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < 875115b82c295277b81b6dfee7debc725f44e854 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.10
Unaffected: 0 , < 3.10 (semver)
Unaffected: 5.10.265 , ≤ 5.10.* (semver)
Unaffected: 5.15.216 , ≤ 5.15.* (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1 , ≤ * (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/input/misc/ims-pcu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "06cfff93fd40441292567b999091beab11c74504",
              "status": "affected",
              "version": "628329d52474323938a03826941e166bc7c8eff4",
              "versionType": "git"
            },
            {
              "lessThan": "992a7173364dcf63e30012af43da3c2f279839f9",
              "status": "affected",
              "version": "628329d52474323938a03826941e166bc7c8eff4",
              "versionType": "git"
            },
            {
              "lessThan": "3a801bc75ba1d121d0ed60e7234f93ba5651d87d",
              "status": "affected",
              "version": "628329d52474323938a03826941e166bc7c8eff4",
              "versionType": "git"
            },
            {
              "lessThan": "40bbbf2e91fd60715525bf0405c67876af817edf",
              "status": "affected",
              "version": "628329d52474323938a03826941e166bc7c8eff4",
              "versionType": "git"
            },
            {
              "lessThan": "ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49",
              "status": "affected",
              "version": "628329d52474323938a03826941e166bc7c8eff4",
              "versionType": "git"
            },
            {
              "lessThan": "d03a740e087de7dcb2a26dc1123377bd3d1d84ca",
              "status": "affected",
              "version": "628329d52474323938a03826941e166bc7c8eff4",
              "versionType": "git"
            },
            {
              "lessThan": "875115b82c295277b81b6dfee7debc725f44e854",
              "status": "affected",
              "version": "628329d52474323938a03826941e166bc7c8eff4",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/input/misc/ims-pcu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.10"
            },
            {
              "lessThan": "3.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.265",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.216",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.183",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.148",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.101",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.42",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()\n\nThe `ims_pcu_process_data()` processes incoming URB data byte by byte.\nHowever, it fails to check if the `read_pos` index exceeds\nIMS_PCU_BUF_SIZE.\n\nIf a malicious USB device sends a packet larger than IMS_PCU_BUF_SIZE,\n`read_pos` will increment indefinitely. Moreover, since `read_pos` is\nlocated immediately after `read_buf`, the attacker can overwrite\n`read_pos` itself to arbitrarily control the index.\n\nThis manipulated `read_pos` is subsequently used in\n`ims_pcu_handle_response()` to copy data into `cmd_buf`, leading to a\nheap buffer overflow.\n\nSpecifically, an attacker can overwrite the `cmd_done.wait.head` located\nat offset 136 relative to `cmd_buf` in the `ims_pcu_handle_response()`.\nConsequently, when the driver calls `complete(\u0026pcu-\u003ecmd_done)`, it\ntriggers a control flow hijack by using the manipulated pointer.\n\nFix this by adding a bounds check for `read_pos` before writing to\n`read_buf`. If the packet is too long, discard it, log a warning,\nand reset the parser state.\n\n[dtor: factor out resetting packet state, reset checksum as well]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:28:39.404Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/06cfff93fd40441292567b999091beab11c74504"
        },
        {
          "url": "https://git.kernel.org/stable/c/992a7173364dcf63e30012af43da3c2f279839f9"
        },
        {
          "url": "https://git.kernel.org/stable/c/3a801bc75ba1d121d0ed60e7234f93ba5651d87d"
        },
        {
          "url": "https://git.kernel.org/stable/c/40bbbf2e91fd60715525bf0405c67876af817edf"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49"
        },
        {
          "url": "https://git.kernel.org/stable/c/d03a740e087de7dcb2a26dc1123377bd3d1d84ca"
        },
        {
          "url": "https://git.kernel.org/stable/c/875115b82c295277b81b6dfee7debc725f44e854"
        }
      ],
      "title": "Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64565",
    "datePublished": "2026-08-04T06:23:24.089Z",
    "dateReserved": "2026-07-19T15:36:31.797Z",
    "dateUpdated": "2026-08-19T16:28:39.404Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64565",
      "date": "2026-10-29",
      "epss": "0.00184",
      "percentile": "0.0799"
    },
    "microsoft_vex": {
      "current_release_date": "2026-08-09T01:41:47.000Z",
      "cve": "CVE-2026-64565",
      "id": "msrc_CVE-2026-64565",
      "initial_release_date": "2026-08-07T01:07:30.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-64565.json",
      "version": "2"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/input/misc/ims-pcu.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "06cfff93fd40441292567b999091beab11c74504",
                    "status": "affected",
                    "version": "628329d52474323938a03826941e166bc7c8eff4",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "992a7173364dcf63e30012af43da3c2f279839f9",
                    "status": "affected",
                    "version": "628329d52474323938a03826941e166bc7c8eff4",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "3a801bc75ba1d121d0ed60e7234f93ba5651d87d",
                    "status": "affected",
                    "version": "628329d52474323938a03826941e166bc7c8eff4",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "40bbbf2e91fd60715525bf0405c67876af817edf",
                    "status": "affected",
                    "version": "628329d52474323938a03826941e166bc7c8eff4",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49",
                    "status": "affected",
                    "version": "628329d52474323938a03826941e166bc7c8eff4",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "d03a740e087de7dcb2a26dc1123377bd3d1d84ca",
                    "status": "affected",
                    "version": "628329d52474323938a03826941e166bc7c8eff4",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "875115b82c295277b81b6dfee7debc725f44e854",
                    "status": "affected",
                    "version": "628329d52474323938a03826941e166bc7c8eff4",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/input/misc/ims-pcu.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "3.10"
                  },
                  {
                    "lessThan": "3.10",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.265",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.216",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.183",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.148",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.101",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.42",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.1",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()\n\nThe `ims_pcu_process_data()` processes incoming URB data byte by byte.\nHowever, it fails to check if the `read_pos` index exceeds\nIMS_PCU_BUF_SIZE.\n\nIf a malicious USB device sends a packet larger than IMS_PCU_BUF_SIZE,\n`read_pos` will increment indefinitely. Moreover, since `read_pos` is\nlocated immediately after `read_buf`, the attacker can overwrite\n`read_pos` itself to arbitrarily control the index.\n\nThis manipulated `read_pos` is subsequently used in\n`ims_pcu_handle_response()` to copy data into `cmd_buf`, leading to a\nheap buffer overflow.\n\nSpecifically, an attacker can overwrite the `cmd_done.wait.head` located\nat offset 136 relative to `cmd_buf` in the `ims_pcu_handle_response()`.\nConsequently, when the driver calls `complete(\u0026pcu-\u003ecmd_done)`, it\ntriggers a control flow hijack by using the manipulated pointer.\n\nFix this by adding a bounds check for `read_pos` before writing to\n`read_buf`. If the packet is too long, discard it, log a warning,\nand reset the parser state.\n\n[dtor: factor out resetting packet state, reset checksum as well]"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nEntrada: ims-pcu - soluciona desbordamiento de b\u00fafer de pila en ims_pcu_process_data()\n\nLa \u2019ims_pcu_process_data()\u2019 procesa los datos URB entrantes byte a byte.\nSin embargo, no verifica si el \u00edndice \u2019read_pos\u2019 excede \u2019IMS_PCU_BUF_SIZE\u2019.\n\nSi un dispositivo USB malicioso env\u00eda un paquete m\u00e1s grande que \u2019IMS_PCU_BUF_SIZE\u2019, \u2019read_pos\u2019 se incrementar\u00e1 indefinidamente. Adem\u00e1s, dado que \u2019read_pos\u2019 se encuentra inmediatamente despu\u00e9s de \u2019read_buf\u2019, el atacante puede sobrescribir el propio \u2019read_pos\u2019 para controlar arbitrariamente el \u00edndice.\n\nEste \u2019read_pos\u2019 manipulado se utiliza posteriormente en \u2019ims_pcu_handle_response()\u2019 para copiar datos en \u2019cmd_buf\u2019, lo que lleva a un desbordamiento de b\u00fafer de pila.\n\nEspec\u00edficamente, un atacante puede sobrescribir el \u2019cmd_done.wait.head\u2019 ubicado en el desplazamiento 136 con respecto a \u2019cmd_buf\u2019 en \u2019ims_pcu_handle_response()\u2019. En consecuencia, cuando el controlador llama a \u2019complete(\u0026pcu  -\u003e  cmd_done)\u2019, desencadena un secuestro de flujo de control mediante el uso del puntero manipulado.\n\nSolucione esto a\u00f1adiendo una comprobaci\u00f3n de l\u00edmites para \u2019read_pos\u2019 antes de escribir en \u2019read_buf\u2019. Si el paquete es demasiado largo, des\u00e9chelo, registre una advertencia y reinicie el estado del analizador.\n\n[dtor: refactorizar el restablecimiento del estado del paquete, restablecer la suma de verificaci\u00f3n tambi\u00e9n]"
          }
        ],
        "id": "CVE-2026-64565",
        "lastModified": "2026-10-23T23:10:00.157",
        "metrics": {},
        "published": "2026-08-04T07:16:31.477",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/06cfff93fd40441292567b999091beab11c74504"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/3a801bc75ba1d121d0ed60e7234f93ba5651d87d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/40bbbf2e91fd60715525bf0405c67876af817edf"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/875115b82c295277b81b6dfee7debc725f44e854"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/992a7173364dcf63e30012af43da3c2f279839f9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/d03a740e087de7dcb2a26dc1123377bd3d1d84ca"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-25T15:02:59+00:00",
      "cve": "CVE-2026-64565",
      "id": "CVE-2026-64565",
      "initial_release_date": "2026-08-04T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64565.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.