{
  "cveId": "CVE-2026-89458",
  "url": "https://patchblox.com/security/cve/CVE-2026-89458",
  "summary": "CVE-2026-89458 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-89458, released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  s390/dasd: Do not complete a failed ESE read as...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  s390/dasd: Do not complete a failed ESE read as successful  dasd_int_handler() completes an NRF read of an unallocated ESE track by calling ese_read() and unconditionally marking the request DASD_CQR_SUCCESS. dasd_eckd_ese_read() can return an error before it has zeroed the destination buffer: a failed sense-data parse or a current track outside the requested range both return early, leaving the destination pages untouched. The request is still completed successfully, so the block layer is handed stale / uninitialized memory instead of zeros.  Check the ese_read() return value and fail the request through the normal error path instead of forcing DASD_CQR_SUCCESS.",
  "published": "2026-09-11T20:19:26Z",
  "severity": "",
  "epss": 0.00177,
  "epssPercentile": 0.07242,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.190-1",
      "fix": "DEBIAN-CVE-2026-89458",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89458",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.111-1",
      "fix": "DEBIAN-CVE-2026-89458",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89458",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-89458",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89458",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.111-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-89458",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89458",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}