{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "628329d52474323938a03826941e166bc7c8eff4"
            },
            {
              "fixed": "40bbbf2e91fd60715525bf0405c67876af817edf"
            },
            {
              "fixed": "ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49"
            },
            {
              "fixed": "d03a740e087de7dcb2a26dc1123377bd3d1d84ca"
            },
            {
              "fixed": "875115b82c295277b81b6dfee7debc725f44e854"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.10.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64565.json"
  },
  "details": "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]",
  "id": "CVE-2026-64565",
  "modified": "2026-08-06T03:31:04.838395195Z",
  "published": "2026-08-04T06:23:24.089Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/40bbbf2e91fd60715525bf0405c67876af817edf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/875115b82c295277b81b6dfee7debc725f44e854"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d03a740e087de7dcb2a26dc1123377bd3d1d84ca"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64565.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64565"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()"
}