{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac"
            },
            {
              "fixed": "eec49a33611f20336b357b3953df44f1a02049e8"
            },
            {
              "fixed": "bacc7f31085c9820922f00bc7d79756ffa13123a"
            },
            {
              "fixed": "7bfafa1b0cd582983ebec6bb20f0a435528fe567"
            },
            {
              "fixed": "7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e"
            },
            {
              "fixed": "25357b670afb5b517096da783abaa5cc4bf8359e"
            },
            {
              "fixed": "3cd4efb5df72843dfac892d0b3c7a4a8bd926b65"
            },
            {
              "fixed": "2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1"
            },
            {
              "fixed": "fd63f185979b047fb22a0dfc6bd94d0cab6a6a70"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.6.0"
            },
            {
              "fixed": "5.10.253"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.203"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.168"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.134"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.81"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.22"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43339.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: prevent possible UaF in addrconf_permanent_addr()\n\nThe mentioned helper try to warn the user about an exceptional\ncondition, but the message is delivered too late, accessing the ipv6\nafter its possible deletion.\n\nReorder the statement to avoid the possible UaF; while at it, place the\nwarning outside the idev-\u003elock as it needs no protection.",
  "id": "CVE-2026-43339",
  "modified": "2026-07-08T05:38:43.880707035Z",
  "published": "2026-05-08T13:31:24.315Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25357b670afb5b517096da783abaa5cc4bf8359e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3cd4efb5df72843dfac892d0b3c7a4a8bd926b65"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7bfafa1b0cd582983ebec6bb20f0a435528fe567"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bacc7f31085c9820922f00bc7d79756ffa13123a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eec49a33611f20336b357b3953df44f1a02049e8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fd63f185979b047fb22a0dfc6bd94d0cab6a6a70"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43339.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43339"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ipv6: prevent possible UaF in addrconf_permanent_addr()"
}