{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97"
            },
            {
              "fixed": "f6ec135941d2c1c2dbb87b5ce1783f4f6ac6ccca"
            },
            {
              "fixed": "caf11dfea5233a69298a1c448bbf8d1639c80536"
            },
            {
              "fixed": "01ef69785dc3162f588a361ab770b1e312800188"
            },
            {
              "fixed": "a998a7e250bf976539e05a00ec64a81292afecaa"
            },
            {
              "fixed": "310da27932dd0afe7ce7456dfe1f0814c3301f41"
            },
            {
              "fixed": "2602f7bb5818e92315feeaeb71d8ce4d5c9ab160"
            },
            {
              "fixed": "0b68881501460c3761f196469e1e503218c5e536"
            },
            {
              "fixed": "d114bfdc9b76bf93b881e195b7ec957c14227bab"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.5.0"
            },
            {
              "fixed": "5.10.258"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.140"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.90"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.32"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46234.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock: fix buffer size clamping order\n\nIn vsock_update_buffer_size(), the buffer size was being clamped to the\nmaximum first, and then to the minimum. If a user sets a minimum buffer\nsize larger than the maximum, the minimum check overrides the maximum\ncheck, inverting the constraint.\n\nThis breaks the intended socket memory boundaries by allowing the\nvsk-\u003ebuffer_size to grow beyond the configured vsk-\u003ebuffer_max_size.\n\nFix this by checking the minimum first, and then the maximum. This\nensures the buffer size never exceeds the buffer_max_size.",
  "id": "CVE-2026-46234",
  "modified": "2026-07-15T01:49:09.030111229Z",
  "published": "2026-05-28T09:40:58.373Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/01ef69785dc3162f588a361ab770b1e312800188"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b68881501460c3761f196469e1e503218c5e536"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2602f7bb5818e92315feeaeb71d8ce4d5c9ab160"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/310da27932dd0afe7ce7456dfe1f0814c3301f41"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a998a7e250bf976539e05a00ec64a81292afecaa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/caf11dfea5233a69298a1c448bbf8d1639c80536"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d114bfdc9b76bf93b881e195b7ec957c14227bab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f6ec135941d2c1c2dbb87b5ce1783f4f6ac6ccca"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46234.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46234"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "vsock: fix buffer size clamping order"
}