ALSA: ctxfi: Check the error for index mapping

{
  "id": "00d20e90b20c39523fcdee9894ba84b3907952ff7b3d5baf15a63dc4a84f6368",
  "url": "https://osv.dev/vulnerability/CVE-2026-31777",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ALSA: ctxfi: Check the error for index mapping",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ALSA: ctxfi: Check the error for index mapping The ctxfi driver blindly assumed a proper value returned from daio_device_index(), but it's not always true. Add a proper error check to deal with the error from the function.",
    "evidence": "osv:CVE-2026-31777",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.57",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.19.12",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-31777",
      "aliases": [
        "CVE-2026-31777"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8cc72361481f00253f1e468ade5795427386d593"
                },
                {
                  "fixed": "971854e7b6ddda78669d3d0cf6566c7b8aca1fdb"
                },
                {
                  "fixed": "d4d3b8cbb70a2de247cbfe99bdb232aef9ed59bc"
                },
                {
                  "fixed": "277c6960d4ddb94d16198afd70c92c3d4593d131"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31777.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "2.6.31"
                },
                {
                  "fixed": "6.18.57"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "6.19.12"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31777.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.224751689Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/277c6960d4ddb94d16198afd70c92c3d4593d131",
        "https://git.kernel.org/stable/c/971854e7b6ddda78669d3d0cf6566c7b8aca1fdb",
        "https://git.kernel.org/stable/c/d4d3b8cbb70a2de247cbfe99bdb232aef9ed59bc",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31777.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-31777",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31777.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-31777",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 514007,
  "published_at": "2026-05-01T14:15:05.127+00:00"
}