{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "5.3"
              },
              {
                "fixed": "5.3.4"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "19.10"
              }
            ]
          }
        ]
      }
    }
  ],
  "details": "In the Linux kernel before 5.3.4, a reference count usage error in the fib6_rule_suppress() function in the fib6 suppression feature of net/ipv6/fib6_rules.c, when handling the FIB_LOOKUP_NOREF flag, can be exploited by a local attacker to corrupt memory, aka CID-ca7a03c41753.",
  "id": "CVE-2019-18198",
  "modified": "2026-03-15T13:50:04.588324390Z",
  "published": "2019-10-18T22:15:14.767Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security.netapp.com/advisory/ntap-20191031-0005/"
    },
    {
      "type": "ADVISORY",
      "url": "https://usn.ubuntu.com/4161-1/"
    },
    {
      "type": "ADVISORY",
      "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4"
    },
    {
      "type": "REPORT",
      "url": "https://launchpad.net/bugs/1847478"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca7a03c4175366a92cee0ccc4fec0038c3266e26"
    },
    {
      "type": "FIX",
      "url": "https://github.com/torvalds/linux/commit/ca7a03c4175366a92cee0ccc4fec0038c3266e26"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}