{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1b43af5480c351dbcb2eef478bafe179cbeb6e83"
            },
            {
              "fixed": "89f9c5fee3c64c5cabc34e65599308fd3c879cf9"
            },
            {
              "fixed": "27210d433a8c5fe6bf7278a04bbaeb49a81d0290"
            },
            {
              "fixed": "059efb48dd746518898faaa9b965511009b59639"
            },
            {
              "fixed": "d8a01d27873e04bebd357dc87859aa756e0b28b2"
            },
            {
              "fixed": "110ccbd28c9444866fcc84ba96a2ad64fa6e95ae"
            },
            {
              "fixed": "9facb861dc6b9b9ea9793ef5032a9a826f7a4229"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.19"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.6.151"
            }
          ],
          "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-2026-72392.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: fib6: fix NULL deref in fib6_walk_continue() on multi-batch dump\n\ninet6_dump_fib() saves its progress in cb-\u003eargs[1] as a positional\nindex within the current hash chain.  Between batches, a concurrent\nfib6_new_table() can insert a new table at the chain head, shifting\nall existing entries.  The saved index then lands on a different\ntable, causing fib6_dump_table() to set w-\u003eroot to the wrong table\nwhile w-\u003enode still points into the previous one.\nfib6_walk_continue() dereferences w-\u003enode-\u003eparent (NULL) and panics:\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000008\n  RIP: 0010:fib6_walk_continue+0x6e/0x170\n  Call Trace:\n   \u003cTASK\u003e\n   fib6_dump_table.isra.0+0xc5/0x240\n   inet6_dump_fib+0xf6/0x420\n   rtnl_dumpit+0x30/0xa0\n   netlink_dump+0x15b/0x460\n   netlink_recvmsg+0x1d6/0x2a0\n   ____sys_recvmsg+0x17a/0x190\n\nFix by storing tb-\u003etb6_id in cb-\u003eargs[1] instead of a positional\nindex.  On resume, skip entries until the id matches; a concurrent\nhead-insert can never match the saved id, so the walker always\nresumes on the correct table.",
  "id": "CVE-2026-72392",
  "modified": "2026-08-16T03:31:12.764889773Z",
  "published": "2026-08-15T05:56:20.463Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/059efb48dd746518898faaa9b965511009b59639"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/110ccbd28c9444866fcc84ba96a2ad64fa6e95ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/27210d433a8c5fe6bf7278a04bbaeb49a81d0290"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89f9c5fee3c64c5cabc34e65599308fd3c879cf9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9facb861dc6b9b9ea9793ef5032a9a826f7a4229"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d8a01d27873e04bebd357dc87859aa756e0b28b2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72392.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72392"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ipv6: fib6: fix NULL deref in fib6_walk_continue() on multi-batch dump"
}