{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5e6bdd37c5526ef01326df5dabb93011ee89237e"
            },
            {
              "fixed": "9e063165d3fe58db2a517717b830f17e82d03467"
            },
            {
              "fixed": "6b0954c8a259da1e4aa745989f82723947acfb46"
            },
            {
              "fixed": "d0a2f97d8c97134aa7f6a191940b7bab4bb42f5f"
            },
            {
              "fixed": "f735b9710f0c8fe72c1060103e865f4ae678190b"
            },
            {
              "fixed": "d6b8778b1b82aa3a8dbf8612080f635b834bd16b"
            },
            {
              "fixed": "ceafb262475ac6cb3a7d07b1102608be2b216b99"
            },
            {
              "fixed": "15ec03452c18e8d288e519837d21b308300d74b2"
            },
            {
              "fixed": "6fb5ba2e7e43173a3761e46f091070a8185efa14"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "fbbacd0dcbc3ae9398c569dbea96ae4b5ad97e04"
            },
            {
              "last_affected": "5f7c9989f11305aaa43e0f4378f4f070022a9f2b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.4.26"
            },
            {
              "fixed": "5.5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.5.10"
            },
            {
              "fixed": "5.6"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.6.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "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/2026/89xxx/CVE-2026-89456.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: Propagate partial completion length across ERP recovery\n\ndasd_default_erp_postaction() copies the timing and device state from\nthe finished ERP request back to the original request but drops\nproc_bytes. A request that was partially completed, an ESE read of a\nnot-yet-allocated track returns fewer bytes than requested, and then\nrecovered through the ERP chain loses its partial-completion length.\n__dasd_cleanup_cqr() then sees proc_bytes == 0 and completes the whole\nrequest instead of requeueing the remainder, silently returning zeroed\ndata for the part that was never read.\n\nCarry proc_bytes over to the original request like the other\nper-request state.",
  "id": "CVE-2026-89456",
  "modified": "2026-09-15T03:30:54.254203269Z",
  "published": "2026-09-11T19:43:20.037Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/15ec03452c18e8d288e519837d21b308300d74b2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6b0954c8a259da1e4aa745989f82723947acfb46"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fb5ba2e7e43173a3761e46f091070a8185efa14"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e063165d3fe58db2a517717b830f17e82d03467"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ceafb262475ac6cb3a7d07b1102608be2b216b99"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0a2f97d8c97134aa7f6a191940b7bab4bb42f5f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d6b8778b1b82aa3a8dbf8612080f635b834bd16b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f735b9710f0c8fe72c1060103e865f4ae678190b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89456.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89456"
    },
    {
      "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:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "s390/dasd: Propagate partial completion length across ERP recovery"
}