{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d6efaa50af62fb0790dd1fd4e7e5506b46312510"
            },
            {
              "fixed": "8b85ef0f561039e249c3f883c5280a1449c6dbee"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1"
            },
            {
              "fixed": "97be6396817bd3b11d06239010d27902940bfaa9"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "2b658c1c442ec1cd9eec5ead98d68662c40fe645"
            },
            {
              "fixed": "f9f808227554b2c116fd07dd2328ecd74ea3f411"
            },
            {
              "fixed": "3afefbfe55c2a8a0c4bdf6f4cc1f773da120027c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.12.78"
            },
            {
              "fixed": "6.12.113"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.18.20"
            },
            {
              "fixed": "6.18.56"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.19.10"
            },
            {
              "fixed": "6.20"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "eb57dae20fdf6f3069cdc07821fa3bb46de381d7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.113"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.56"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98860.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: bpf: cast size to ssize_t when checking hid_bpf_hw_request\n\nAs reported by Sashiko:\nIf a transport driver encounters a hardware error and returns a negative\nerror code such as -EPIPE, ret is implicitly promoted to size_t when\ncompared against size. This causes the negative error code to evaluate\nas a large positive number, making the (ret \u003e size) condition true.\n\nThis silently converts the hardware error into a success return value\nand copies the unmodified buffer back, which could leave BPF programs\noperating on uninitialized or stale data.\n\nFix this by casting size into ssize_t to return the actual negative\nerror code.",
  "id": "CVE-2026-98860",
  "modified": "2026-10-19T02:30:36.568488236Z",
  "published": "2026-10-18T15:51:21.403Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3afefbfe55c2a8a0c4bdf6f4cc1f773da120027c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b85ef0f561039e249c3f883c5280a1449c6dbee"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/97be6396817bd3b11d06239010d27902940bfaa9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9f808227554b2c116fd07dd2328ecd74ea3f411"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98860.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98860"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "HID: bpf: cast size to ssize_t when checking hid_bpf_hw_request"
}