{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ab49886e3da73b6b35ece21006e191910427bb30"
            },
            {
              "fixed": "ff3a4487ead475e27b43280b8ee3d8464fe280e1"
            },
            {
              "fixed": "78a63fb2f7d5630d1c1f2859a20d4e4226863b41"
            },
            {
              "fixed": "ced48f55bac73f0822eae90509e51b42b4f646c8"
            },
            {
              "fixed": "70bcb678561f0fb58f33270fc73f12f3be72b878"
            },
            {
              "fixed": "aef897c9d2dd0d9339167fb82b62beff68d076cb"
            },
            {
              "fixed": "8a3707653ab658e082ccd992e92594e01b09a3fc"
            },
            {
              "fixed": "edfb1e094104a50f931553dc82ac59246569fd32"
            },
            {
              "fixed": "20c2d6a20ca936f5aaa6dd40f73f262ac45c87cc"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.15.0"
            },
            {
              "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": "6.6.142"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.92"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.34"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64096.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: mcast: fix use-after-free in orig_node RCU release\n\nbatadv_mcast_purge_orig() removes entries from RCU-protected hlists but\ndoes not wait for an RCU grace period before returning. Concurrent RCU\nreaders may still accesses references to those entries at the point of\nremoval. RCU-protected readers trying to operate on entries like\norig-\u003emcast_want_all_ipv6_node will then access already freed memory.\n\nFix this by moving batadv_mcast_purge_orig() to batadv_orig_node_release(),\njust before the call_rcu() invocation. This ensures RCU readers that were\nactive at purge time have drained before the orig_node memory is reclaimed.",
  "id": "CVE-2026-64096",
  "modified": "2026-08-12T03:51:13.575687019Z",
  "published": "2026-07-19T15:40:02.969Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/20c2d6a20ca936f5aaa6dd40f73f262ac45c87cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/70bcb678561f0fb58f33270fc73f12f3be72b878"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/78a63fb2f7d5630d1c1f2859a20d4e4226863b41"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8a3707653ab658e082ccd992e92594e01b09a3fc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aef897c9d2dd0d9339167fb82b62beff68d076cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ced48f55bac73f0822eae90509e51b42b4f646c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/edfb1e094104a50f931553dc82ac59246569fd32"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff3a4487ead475e27b43280b8ee3d8464fe280e1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64096.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64096"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "batman-adv: mcast: fix use-after-free in orig_node RCU release"
}