{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "fce8a7bb5b4bfb8a27324703fd5b002ee9247e90"
            },
            {
              "fixed": "a7f22105a7df8c7fd74d0af27ace6fa94fe03d87"
            },
            {
              "fixed": "6b6bbc6c878d64eacc60877df49fce7b1b6a08d0"
            },
            {
              "fixed": "75a604e9f1cfdebda421062fdf42225ca32154cd"
            },
            {
              "fixed": "a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.9.0"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80987.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNTB: ntb_transport: Reject oversized TX buffers\n\nntb_process_tx() handles an oversized buffer by calling tx_handler()\nwith a NULL data pointer and returning success. ntb_netdev therefore\nneither frees the skb in its completion callback nor takes its enqueue\nerror path, leaking it.\n\nReject oversized buffers in ntb_transport_tx_enqueue() before acquiring\na queue entry and return -EMSGSIZE. The caller retains ownership of the\nbuffer, and the preceding netdev patch frees the skb when enqueue\nreturns this permanent error.",
  "id": "CVE-2026-80987",
  "modified": "2026-09-13T03:30:46.586667199Z",
  "published": "2026-09-11T19:42:45.574Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6b6bbc6c878d64eacc60877df49fce7b1b6a08d0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/75a604e9f1cfdebda421062fdf42225ca32154cd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a7f22105a7df8c7fd74d0af27ace6fa94fe03d87"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80987.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80987"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "NTB: ntb_transport: Reject oversized TX buffers"
}