Vulnerability-Lookup

FKIE_CVE-2026-64096

Vulnerability from fkie_nvd - Published: 2026-07-19 16:17 - Updated: 2026-08-11 16:10

Severity

8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: batman-adv: mcast: fix use-after-free in orig_node RCU release batadv_mcast_purge_orig() removes entries from RCU-protected hlists but does not wait for an RCU grace period before returning. Concurrent RCU readers may still accesses references to those entries at the point of removal. RCU-protected readers trying to operate on entries like orig->mcast_want_all_ipv6_node will then access already freed memory. Fix this by moving batadv_mcast_purge_orig() to batadv_orig_node_release(), just before the call_rcu() invocation. This ensures RCU readers that were active at purge time have drained before the orig_node memory is reclaimed.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/20c2d6a20ca936f5aaa6dd40f73f262ac45c87cc	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/70bcb678561f0fb58f33270fc73f12f3be72b878	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/78a63fb2f7d5630d1c1f2859a20d4e4226863b41	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8a3707653ab658e082ccd992e92594e01b09a3fc	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/aef897c9d2dd0d9339167fb82b62beff68d076cb	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ced48f55bac73f0822eae90509e51b42b4f646c8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/edfb1e094104a50f931553dc82ac59246569fd32	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ff3a4487ead475e27b43280b8ee3d8464fe280e1	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/originator.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ff3a4487ead475e27b43280b8ee3d8464fe280e1",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "78a63fb2f7d5630d1c1f2859a20d4e4226863b41",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "ced48f55bac73f0822eae90509e51b42b4f646c8",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "70bcb678561f0fb58f33270fc73f12f3be72b878",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "aef897c9d2dd0d9339167fb82b62beff68d076cb",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "8a3707653ab658e082ccd992e92594e01b09a3fc",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "edfb1e094104a50f931553dc82ac59246569fd32",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "20c2d6a20ca936f5aaa6dd40f73f262ac45c87cc",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/originator.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.15"
            },
            {
              "lessThan": "3.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.142",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.92",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B660471A-A5B2-4A23-9E10-F8D4552AE5CC",
              "versionEndExcluding": "5.10.258",
              "versionStartIncluding": "3.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "919C10A9-7951-4A74-BADD-C135A0A8D8B4",
              "versionEndExcluding": "5.15.209",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "92385813-D91D-480D-83A1-F423D2CBB2BA",
              "versionEndExcluding": "6.1.175",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FBFF77B0-526A-4AF1-84D0-ED7187624A67",
              "versionEndExcluding": "6.6.142",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9CB90BD9-95B7-4D7F-9F17-4ECE6CFB66C9",
              "versionEndExcluding": "6.12.92",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A4B1EF6D-18D7-4838-BC37-7499D5DCC3C0",
              "versionEndExcluding": "6.18.34",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0520D091-FC52-4A50-AF07-70AE7D08B750",
              "versionEndExcluding": "7.0.11",
              "versionStartIncluding": "6.19",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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",
  "lastModified": "2026-08-11T16:10:37.097",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-19T16:17:50.600",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/20c2d6a20ca936f5aaa6dd40f73f262ac45c87cc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/70bcb678561f0fb58f33270fc73f12f3be72b878"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/78a63fb2f7d5630d1c1f2859a20d4e4226863b41"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8a3707653ab658e082ccd992e92594e01b09a3fc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/aef897c9d2dd0d9339167fb82b62beff68d076cb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ced48f55bac73f0822eae90509e51b42b4f646c8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/edfb1e094104a50f931553dc82ac59246569fd32"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ff3a4487ead475e27b43280b8ee3d8464fe280e1"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2026-64096 (GCVE-0-2026-64096)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-08-05 12:39

Title

batman-adv: mcast: fix use-after-free in orig_node RCU release

Summary

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6843 records in the last 180 days details

References

8 references

URL	Tags
https://git.kernel.org/stable/c/ff3a4487ead475e27…
https://git.kernel.org/stable/c/78a63fb2f7d5630d1…
https://git.kernel.org/stable/c/ced48f55bac73f082…
https://git.kernel.org/stable/c/70bcb678561f0fb58…
https://git.kernel.org/stable/c/aef897c9d2dd0d933…
https://git.kernel.org/stable/c/8a3707653ab658e08…
https://git.kernel.org/stable/c/edfb1e094104a50f9…
https://git.kernel.org/stable/c/20c2d6a20ca936f5a…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ab49886e3da73b6b35ece21006e191910427bb30 , < ff3a4487ead475e27b43280b8ee3d8464fe280e1 (git) Affected: ab49886e3da73b6b35ece21006e191910427bb30 , < 78a63fb2f7d5630d1c1f2859a20d4e4226863b41 (git) Affected: ab49886e3da73b6b35ece21006e191910427bb30 , < ced48f55bac73f0822eae90509e51b42b4f646c8 (git) Affected: ab49886e3da73b6b35ece21006e191910427bb30 , < 70bcb678561f0fb58f33270fc73f12f3be72b878 (git) Affected: ab49886e3da73b6b35ece21006e191910427bb30 , < aef897c9d2dd0d9339167fb82b62beff68d076cb (git) Affected: ab49886e3da73b6b35ece21006e191910427bb30 , < 8a3707653ab658e082ccd992e92594e01b09a3fc (git) Affected: ab49886e3da73b6b35ece21006e191910427bb30 , < edfb1e094104a50f931553dc82ac59246569fd32 (git) Affected: ab49886e3da73b6b35ece21006e191910427bb30 , < 20c2d6a20ca936f5aaa6dd40f73f262ac45c87cc (git)
Linux	Linux	Affected: 3.15 Unaffected: 0 , < 3.15 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.142 , ≤ 6.6.* (semver) Unaffected: 6.12.92 , ≤ 6.12.* (semver) Unaffected: 6.18.34 , ≤ 6.18.* (semver) Unaffected: 7.0.11 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/originator.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ff3a4487ead475e27b43280b8ee3d8464fe280e1",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "78a63fb2f7d5630d1c1f2859a20d4e4226863b41",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "ced48f55bac73f0822eae90509e51b42b4f646c8",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "70bcb678561f0fb58f33270fc73f12f3be72b878",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "aef897c9d2dd0d9339167fb82b62beff68d076cb",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "8a3707653ab658e082ccd992e92594e01b09a3fc",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "edfb1e094104a50f931553dc82ac59246569fd32",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            },
            {
              "lessThan": "20c2d6a20ca936f5aaa6dd40f73f262ac45c87cc",
              "status": "affected",
              "version": "ab49886e3da73b6b35ece21006e191910427bb30",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/originator.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.15"
            },
            {
              "lessThan": "3.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.142",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.92",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.142",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.92",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.34",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - Exploitation requires injecting BATMAN-adv protocol frames onto the victim\u0027s mesh segment (typically WiFi or wired L2 mesh), reachable only from adjacent mesh peers rather than arbitrary remote Internet hosts.\nAC:L - An attacker on the mesh controls both sides of the race by registering an originator with multicast flags via OGMs, ceasing heartbeats to trigger purge, and flooding IPv6 multicast to drive RCU readers in batadv_mcast_forw_want_all_ipv6().\nPR:N - No local privileges on the victim are required; a rogue mesh peer can send OGMs and multicast traffic that drive originator creation, timeout purge, and concurrent RCU list traversal without authentication.\nUI:N - Exploitation is fully automated through mesh protocol packet exchange and does not require any action from a local user or administrator on the victim node.\nS:U - The use-after-free corrupts kernel heap memory within the same kernel security boundary and does not cross into other VMs, containers, or hardware isolation domains.\nC:H - The use-after-free on batadv_orig_node allows concurrent RCU readers to dereference freed memory containing orig-\u003emcast_want_all_ipv6_node and related fields, enabling arbitrary kernel memory disclosure.\nI:H - Use-after-free of the orig_node structure provides attacker-influencable freed heap slots that can be leveraged for arbitrary kernel writes and potential code execution via heap grooming.\nA:H - Concurrent access to freed orig_node memory during RCU list traversal can cause kernel oops or panic, and UAF conditions inherently threaten system availability even before full exploitation."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:39:10.448Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ff3a4487ead475e27b43280b8ee3d8464fe280e1"
        },
        {
          "url": "https://git.kernel.org/stable/c/78a63fb2f7d5630d1c1f2859a20d4e4226863b41"
        },
        {
          "url": "https://git.kernel.org/stable/c/ced48f55bac73f0822eae90509e51b42b4f646c8"
        },
        {
          "url": "https://git.kernel.org/stable/c/70bcb678561f0fb58f33270fc73f12f3be72b878"
        },
        {
          "url": "https://git.kernel.org/stable/c/aef897c9d2dd0d9339167fb82b62beff68d076cb"
        },
        {
          "url": "https://git.kernel.org/stable/c/8a3707653ab658e082ccd992e92594e01b09a3fc"
        },
        {
          "url": "https://git.kernel.org/stable/c/edfb1e094104a50f931553dc82ac59246569fd32"
        },
        {
          "url": "https://git.kernel.org/stable/c/20c2d6a20ca936f5aaa6dd40f73f262ac45c87cc"
        }
      ],
      "title": "batman-adv: mcast: fix use-after-free in orig_node RCU release",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64096",
    "datePublished": "2026-07-19T15:40:02.969Z",
    "dateReserved": "2026-07-19T07:54:57.033Z",
    "dateUpdated": "2026-08-05T12:39:10.448Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted