{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "db33c77dddc2ed2cff3061d0b096a9f5ab0c3647"
            },
            {
              "fixed": "39e01b4addfbbe177567d6ed1dfb81f9cccb19e6"
            },
            {
              "fixed": "bda3c598ade6ea03884074b91e31608326684921"
            },
            {
              "fixed": "a4cb830e0b55ac76c849fd7840afb251f4c028fa"
            },
            {
              "fixed": "68c5a2a19987c035eb129e627e579adafb04f637"
            },
            {
              "fixed": "83534891c058ed71e251135072640911670869aa"
            },
            {
              "fixed": "6744ab60dfac55d1df5733960aad5be300984301"
            },
            {
              "fixed": "f1ca750c0510bdbb504bf084d2f196ef2af92ea6"
            },
            {
              "fixed": "609c5b04a28dc1b0f3af6a7bc93055135b2d2059"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.2.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68479.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btrtl: validate firmware patch bounds\n\nrtlbt_parse_firmware() copies patch_length - 4 bytes before appending the\nfirmware version. A malformed firmware patch shorter than the version field\ncan make this subtraction underflow and turn the copy into an oversized\nread and write during Bluetooth setup.\n\nThe existing patch_offset + patch_length check can also wrap on 32-bit\narchitectures. Validate the patch length and range without arithmetic\noverflow before allocating or copying the patch.",
  "id": "CVE-2026-68479",
  "modified": "2026-08-18T03:30:50.300625306Z",
  "published": "2026-08-15T05:51:34.106Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39e01b4addfbbe177567d6ed1dfb81f9cccb19e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/609c5b04a28dc1b0f3af6a7bc93055135b2d2059"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6744ab60dfac55d1df5733960aad5be300984301"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68c5a2a19987c035eb129e627e579adafb04f637"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/83534891c058ed71e251135072640911670869aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a4cb830e0b55ac76c849fd7840afb251f4c028fa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bda3c598ade6ea03884074b91e31608326684921"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1ca750c0510bdbb504bf084d2f196ef2af92ea6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68479.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68479"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Bluetooth: btrtl: validate firmware patch bounds"
}