{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e3917c85f41ef1df64e27dc0e46ab0d803c5e73e"
            },
            {
              "fixed": "2c6fbcf4bfac0b2b186acc8d91154c0fa24468a7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "308cd50f174c95a507527037f4de1a0396aa4325"
            },
            {
              "fixed": "af9f5b474a260ad23ffb9793d716a5e3bbce3b48"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "754209850df8367c954ac1de7671c7430b1f342c"
            },
            {
              "fixed": "262dcd809723723ed8a4e05437ec7e9c21a8f17e"
            },
            {
              "fixed": "eb4d7a946970469b3ab0c762432bf161d5b0836c"
            },
            {
              "fixed": "8628f8ebf41669302513fb3f0bf0eba38b226742"
            },
            {
              "fixed": "b72dcfb9bf1f0f0147cda03dc59e4002a315067f"
            },
            {
              "fixed": "e6bdfdf3bcb02d0d626a45e8c98b7e63d2fddf9d"
            },
            {
              "fixed": "9ff797e516dbc1ecb73701ec4c24055712d44411"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.10.150"
            },
            {
              "fixed": "5.10.271"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.15.75"
            },
            {
              "fixed": "5.15.222"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.4.220"
            },
            {
              "fixed": "5.5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.19.17"
            },
            {
              "fixed": "5.20"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.0.3"
            },
            {
              "fixed": "6.1"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "e09caa38e10bcf027100cc22b0e3cc745a39ef0a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0c14f795a9eab9344230f9933798b8ee496f497d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "7fada7c6962219b6fc4ff4e62e46a936af110dd9"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.10.271"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.222"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.189"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.1.0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.18.54"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "7.2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98323.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/siw: Bound fragmented header copies by the remaining length\n\nsiw_get_hdr() can receive an extended DDP/RDMAP header across more than\none TCP callback. The first callback may receive most of the header,\nwhile the next one still limits the copy to hdrlen - MIN_DDP_HDR instead\nof the number of missing bytes. This makes the destination move past the\nend of the header and overwrite the receive state, including\nfpdu_part_rcvd. A later callback can then use a negative fpdu_part_rcvd\nvalue as a copy offset, which creates an OOB write.\n\nUse the number of header bytes already received when calculating the\nnext copy length.",
  "id": "CVE-2026-98323",
  "modified": "2026-10-08T02:31:01.787633565Z",
  "published": "2026-10-06T08:46:17.150Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/262dcd809723723ed8a4e05437ec7e9c21a8f17e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c6fbcf4bfac0b2b186acc8d91154c0fa24468a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8628f8ebf41669302513fb3f0bf0eba38b226742"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ff797e516dbc1ecb73701ec4c24055712d44411"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/af9f5b474a260ad23ffb9793d716a5e3bbce3b48"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b72dcfb9bf1f0f0147cda03dc59e4002a315067f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6bdfdf3bcb02d0d626a45e8c98b7e63d2fddf9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eb4d7a946970469b3ab0c762432bf161d5b0836c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98323.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98323"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "RDMA/siw: Bound fragmented header copies by the remaining length"
}