{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a462230e16acc8664145216da3c928d03556691a"
            },
            {
              "fixed": "26c45abed62536aabf4033fb6d64cf72e93374e9"
            },
            {
              "fixed": "8a10a624996f16628234306b46f0cf36707d78bd"
            },
            {
              "fixed": "d16df755b4493b6d37803c628b2c621d096796a8"
            },
            {
              "fixed": "bec338b07beb883726b32192c8f01c601bc76fda"
            },
            {
              "fixed": "70589b0c005db003f6d8ae4db3c4d54fed7b83e4"
            },
            {
              "fixed": "a33a596d3ad8dfe6c96a368097a028abeee16c17"
            },
            {
              "fixed": "d095de37f78c5f32a4252ef0f99b84ba76550b86"
            },
            {
              "fixed": "db8d634128d2ba88d79c0b601e983ebe14bb0519"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.37"
            },
            {
              "fixed": "5.15.220"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.187"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.156"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.108"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.49"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.11"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "7.2.0"
            },
            {
              "fixed": "7.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80783.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: magicmouse: prevent unbounded recursion in magicmouse_raw_event()\n\nmagicmouse_raw_event() handles DOUBLE_REPORT_ID (0xf7) packets, which pack\ntwo touch reports into one, by splitting the packet and calling itself on\neach half. The only guard against runaway recursion is a \"size \u003c 1\" check,\nwhich stops zero-sized calls but does not bound the recursion depth.\n\nA malicious HID device that matches this driver can send a report starting\nwith DOUBLE_REPORT_ID and filled with the sequence [0xf7, 0x00]. Each level\nconsumes two bytes and recurses on the remainder, so an incoming report of\nup to HID_MAX_BUFFER_SIZE (16 KiB) drives roughly 8000 nested calls. That\neasily exhausts the 16 KiB kernel stack, leading to a stack overflow: a\npanic with CONFIG_VMAP_STACK, or memory corruption without it.\n\nA double report only ever wraps two normal reports; it is never\nlegitimately nested. Refuse to re-enter the DOUBLE_REPORT_ID case from a\nrecursive call so the recursion depth is bounded to two, while all valid\npackets keep being parsed exactly as before.",
  "id": "CVE-2026-80783",
  "modified": "2026-09-06T03:30:16.730574555Z",
  "published": "2026-09-04T15:12:54.859Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26c45abed62536aabf4033fb6d64cf72e93374e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/70589b0c005db003f6d8ae4db3c4d54fed7b83e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8a10a624996f16628234306b46f0cf36707d78bd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a33a596d3ad8dfe6c96a368097a028abeee16c17"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bec338b07beb883726b32192c8f01c601bc76fda"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d095de37f78c5f32a4252ef0f99b84ba76550b86"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d16df755b4493b6d37803c628b2c621d096796a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/db8d634128d2ba88d79c0b601e983ebe14bb0519"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80783.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80783"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "HID: magicmouse: prevent unbounded recursion in magicmouse_raw_event()"
}