{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "aa45dadd34e44fcd6a9df4b395bee5b5633b4cec"
            },
            {
              "fixed": "93e8e3ee165ae4609a1222b516b573837103d2c3"
            },
            {
              "fixed": "ab6564f416a6eaf1199200b6100952407b438f7d"
            },
            {
              "fixed": "6287eefaf21ec805d42f941bd368018cf397a7f5"
            },
            {
              "fixed": "76cc4faba0343c6db945b8dc75425b33d633e1b8"
            },
            {
              "fixed": "c3c06e42e1527716c54f3ad2ced6a034b5f3a489"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.19.0"
            },
            {
              "fixed": "6.6.128"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.75"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.16"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43239.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: prevent races in -\u003equery_interfaces()\n\nIt was possible for two query interface works to be concurrently trying\nto update the interfaces.\n\nPrevent this by checking and updating iface_last_update under\niface_lock.",
  "id": "CVE-2026-43239",
  "modified": "2026-07-08T05:38:57.144762781Z",
  "published": "2026-05-06T11:28:33.623Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6287eefaf21ec805d42f941bd368018cf397a7f5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/76cc4faba0343c6db945b8dc75425b33d633e1b8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/93e8e3ee165ae4609a1222b516b573837103d2c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ab6564f416a6eaf1199200b6100952407b438f7d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3c06e42e1527716c54f3ad2ced6a034b5f3a489"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43239.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43239"
    },
    {
      "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:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "smb: client: prevent races in -\u003equery_interfaces()"
}