{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "138635cc27c9737f940c3aa80912ff7a61c825af"
            },
            {
              "fixed": "9891d7f4f1ede473c54b49776ae07755083eef06"
            },
            {
              "fixed": "fef5aa6e3bcf3c8053307642663a63b7362d7552"
            },
            {
              "fixed": "81d6aee32f8f7bbc175c05dbf61f4430bfb88c4a"
            },
            {
              "fixed": "59962588197863d0d746879f193905c0c6b3df49"
            },
            {
              "fixed": "553366c271479c0d571dd1bb5d1bcde4747fb82e"
            },
            {
              "fixed": "b70c4e5e711931cdd56e6e905737b72f1e649189"
            },
            {
              "fixed": "87138dde2d6937b12b967f28fe598a7d59000ae4"
            },
            {
              "fixed": "5c3398a54266541610c8d0a7082e654e9ff3e259"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.8.0"
            },
            {
              "fixed": "5.10.253"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.203"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.167"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.130"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.78"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.19"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43373.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ncsi: fix skb leak in error paths\n\nEarly return paths in NCSI RX and AEN handlers fail to release\nthe received skb, resulting in a memory leak.\n\nSpecifically, ncsi_aen_handler() returns on invalid AEN packets\nwithout consuming the skb. Similarly, ncsi_rcv_rsp() exits early\nwhen failing to resolve the NCSI device, response handler, or\nrequest, leaving the skb unfreed.",
  "id": "CVE-2026-43373",
  "modified": "2026-07-15T01:49:20.945890590Z",
  "published": "2026-05-08T14:21:23.875Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/553366c271479c0d571dd1bb5d1bcde4747fb82e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59962588197863d0d746879f193905c0c6b3df49"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c3398a54266541610c8d0a7082e654e9ff3e259"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/81d6aee32f8f7bbc175c05dbf61f4430bfb88c4a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/87138dde2d6937b12b967f28fe598a7d59000ae4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9891d7f4f1ede473c54b49776ae07755083eef06"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b70c4e5e711931cdd56e6e905737b72f1e649189"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fef5aa6e3bcf3c8053307642663a63b7362d7552"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43373.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43373"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net: ncsi: fix skb leak in error paths"
}