{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "8d448162bda5ae3b5ecb26fe50c8fbbeae99faa4"
            },
            {
              "fixed": "708f6ec9bcdf58bfd561409110baaf4fd3be4ea3"
            },
            {
              "fixed": "bfcbb4994da9e979c4bcfcf24aaaac69e457e48e"
            },
            {
              "fixed": "a470f7cabc4df72d9bd132f5719a8717292bb440"
            },
            {
              "fixed": "1fbe46d2b72754d8bd580e13e59ccb5d3d0e8cb0"
            },
            {
              "fixed": "8ba0214c3dd32b8ec652947e3f2bc5b8f6e6be9e"
            },
            {
              "fixed": "654c818a69c21d2bea4e8fd9eae7da865df9a5c8"
            },
            {
              "fixed": "82012fd3e78a14360fbc2f1a7491589896704f97"
            },
            {
              "fixed": "e0da8a8cac74f4b9f577979d131f0d2b88a84487"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.2.0"
            },
            {
              "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": "6.12.86"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.27"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46088.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: control: Validate buf_len before strnlen() in snd_ctl_elem_init_enum_names()\n\nsnd_ctl_elem_init_enum_names() advances pointer p through the names\nbuffer while decrementing buf_len. If buf_len reaches zero but items\nremain, the next iteration calls strnlen(p, 0).\n\nWhile strnlen(p, 0) returns 0 and would hit the existing name_len == 0\nerror path, CONFIG_FORTIFY_SOURCE's fortified strnlen() first checks\nmaxlen against __builtin_dynamic_object_size(). When Clang loses track\nof p's object size inside the loop, this triggers a BRK exception panic\nbefore the return value is examined.\n\nAdd a buf_len == 0 guard at the loop entry to prevent calling fortified\nstrnlen() on an exhausted buffer.\n\nFound by kernel fuzz testing through Xiaomi Smartphone.",
  "id": "CVE-2026-46088",
  "modified": "2026-07-08T05:36:48.111118921Z",
  "published": "2026-05-27T12:58:31.895Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1fbe46d2b72754d8bd580e13e59ccb5d3d0e8cb0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/654c818a69c21d2bea4e8fd9eae7da865df9a5c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/708f6ec9bcdf58bfd561409110baaf4fd3be4ea3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82012fd3e78a14360fbc2f1a7491589896704f97"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ba0214c3dd32b8ec652947e3f2bc5b8f6e6be9e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a470f7cabc4df72d9bd132f5719a8717292bb440"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bfcbb4994da9e979c4bcfcf24aaaac69e457e48e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e0da8a8cac74f4b9f577979d131f0d2b88a84487"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46088.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46088"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "ALSA: control: Validate buf_len before strnlen() in snd_ctl_elem_init_enum_names()"
}