CVE-2026-74538

{
  "id": "CVE-2026-74538",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-08-15T13:17:59.137",
  "lastModified": "2026-10-21T13:19:46.330",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: lock sk in iso_connect_ind\n\nAccessing iso_pi(sk)->conn requires lock_sock, which is not taken in the\n\"ev3\" part of iso_connect_ind.  It may also be NULL if socket has\ntransitioned away from the LISTEN/CONNECT states before locking.\n\nFix by adding lock/release. Recheck hcon is valid after lock acquire\nwhere needed."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "net/bluetooth/iso.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "168d9bf9c7f01df71e6404cfff66d9c2a8e968fb",
              "lessThan": "0e830354c120954ccb9ca15880245912722c4031",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "168d9bf9c7f01df71e6404cfff66d9c2a8e968fb",
              "lessThan": "e8e9cff6d80eeec28dec4cf7cc18662986945391",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "168d9bf9c7f01df71e6404cfff66d9c2a8e968fb",
              "lessThan": "9bee7e476534f27e830658dad962d85da9edf6bf",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "168d9bf9c7f01df71e6404cfff66d9c2a8e968fb",
              "lessThan": "4311fd6f429065a8ba208660360a895627a00cf3",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "489efc9ae36f164423f5fa7ace772a7ab8131cd8",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "6.8.9",
              "lessThan": "6.9",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "net/bluetooth/iso.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.9",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.9",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.114",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.44",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.1.8",
              "lessThanOrEqual": "7.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-16T18:59:35.716308Z",
          "id": "CVE-2026-74538",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0e830354c120954ccb9ca15880245912722c4031",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4311fd6f429065a8ba208660360a895627a00cf3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9bee7e476534f27e830658dad962d85da9edf6bf",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e8e9cff6d80eeec28dec4cf7cc18662986945391",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}