{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4ce5dc9316de50e0da84beafe55d1344f829cece"
            },
            {
              "fixed": "f91e472821e32f58b03eb631e20a67157e2b928b"
            },
            {
              "fixed": "21cba134c30c17ae55f468b5809336437df5d7e6"
            },
            {
              "fixed": "b9a30bb7b831e8c5a47fadbdf1760918aaf009cc"
            },
            {
              "fixed": "4f4afc07dcb2edd4f9afa36595373f8cdb9b58c2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.9.0"
            },
            {
              "fixed": "6.12.113"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.57"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99073.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: stop exception dump when nexthop group shrinks\n\nCommit 4ce5dc9316de (\"inet: switch inet_dump_fib() to RCU\nprotection\") allowed IPv4 FIB dumps to run concurrently with nexthop\nreplacement.\n\nfib_dump_info_fnhe() uses fib_info_num_path() as the loop bound,\nthen fib_info_nhc() independently reloads nh-\u003enh_grp. If\nRTM_NEWNEXTHOP replaces a group with fewer paths between those loads,\nfib_info_nhc() returns NULL and the dump dereferences it through\nnhc_flags.\n\nStop the walk when the indexed path is absent. Nexthop groups are\ndense, so the current snapshot has no later path.",
  "id": "CVE-2026-99073",
  "modified": "2026-10-28T02:30:59.540845534Z",
  "published": "2026-10-23T12:23:16.935Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21cba134c30c17ae55f468b5809336437df5d7e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f4afc07dcb2edd4f9afa36595373f8cdb9b58c2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b9a30bb7b831e8c5a47fadbdf1760918aaf009cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f91e472821e32f58b03eb631e20a67157e2b928b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99073.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-99073"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "ipv4: stop exception dump when nexthop group shrinks"
}