{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d"
            },
            {
              "fixed": "335071c0c3637064ec250481f589075db44fe4e6"
            },
            {
              "fixed": "fa6ad76fa8623c0a50d529cd5726fa5d819a3be4"
            },
            {
              "fixed": "9118601ff90b79e8df3c0c98f48ae00c1b02ecef"
            },
            {
              "fixed": "481ea39b342c347b6ac029f3d418486280be4e45"
            },
            {
              "fixed": "ec91078e132179b04e0c3906b599816c056ceaad"
            },
            {
              "fixed": "96581749c7c14fbec32c35728520867929600041"
            },
            {
              "fixed": "8dd43f9a9323f9c01bc8246da8d81a4c783c9e97"
            },
            {
              "fixed": "138d7eca445ef37a0333425d269ee59900ca1104"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.14.0"
            },
            {
              "fixed": "5.10.252"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.202"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.165"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.128"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.75"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.16"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43134.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ\n\nThis adds a check for encryption key size upon receiving\nL2CAP_LE_CONN_REQ which is required by L2CAP/LE/CFC/BV-15-C which\nexpects L2CAP_CR_LE_BAD_KEY_SIZE.",
  "id": "CVE-2026-43134",
  "modified": "2026-07-08T05:38:02.559876575Z",
  "published": "2026-05-06T11:27:21.541Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/138d7eca445ef37a0333425d269ee59900ca1104"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/335071c0c3637064ec250481f589075db44fe4e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/481ea39b342c347b6ac029f3d418486280be4e45"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8dd43f9a9323f9c01bc8246da8d81a4c783c9e97"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9118601ff90b79e8df3c0c98f48ae00c1b02ecef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96581749c7c14fbec32c35728520867929600041"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec91078e132179b04e0c3906b599816c056ceaad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa6ad76fa8623c0a50d529cd5726fa5d819a3be4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43134.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43134"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ"
}