{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "c018ad3de61a1dc4194879a53e5559e094aa7b1a"
            },
            {
              "fixed": "aa9558af859934f24717d4bab97d61004f91a736"
            },
            {
              "fixed": "9c2c05629e46c1fd43931506d41c56a885a98eb4"
            },
            {
              "fixed": "7b162b36de750565404cd3b98315706622c6974f"
            },
            {
              "fixed": "ed90eb5c68420cdfe67ec1f773324198d2ef6f50"
            },
            {
              "fixed": "979175834a699ccc3c4c0b0ba60ecae0f135a587"
            },
            {
              "fixed": "b8afcf799b2cc92c41beebd029e53ed18960184a"
            },
            {
              "fixed": "9a7b7248798123efbd5fafe58461d57c7cc718af"
            },
            {
              "fixed": "7141990add3f75436f2933cb310654cad3b1e3e9"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.13.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72234.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: access unicast_ttvn skb-\u003edata only after skb realloc\n\nThe pskb_may_pull() called by batadv_get_vid() could reallocate the buffer\nbehind the skb. Variables which were pointing to the old buffer need to be\nreassigned to avoid an use-after-free.\n\nThis was done correctly for the ethernet header but missed for the\nunicast_packet pointer.",
  "id": "CVE-2026-72234",
  "modified": "2026-08-18T03:31:13.429535887Z",
  "published": "2026-08-15T05:54:24.395Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7141990add3f75436f2933cb310654cad3b1e3e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b162b36de750565404cd3b98315706622c6974f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/979175834a699ccc3c4c0b0ba60ecae0f135a587"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a7b7248798123efbd5fafe58461d57c7cc718af"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9c2c05629e46c1fd43931506d41c56a885a98eb4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa9558af859934f24717d4bab97d61004f91a736"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b8afcf799b2cc92c41beebd029e53ed18960184a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed90eb5c68420cdfe67ec1f773324198d2ef6f50"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72234.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72234"
    },
    {
      "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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "batman-adv: access unicast_ttvn skb-\u003edata only after skb realloc"
}