{
  "cveId": "CVE-2026-89457",
  "url": "https://patchblox.com/security/cve/CVE-2026-89457",
  "summary": "CVE-2026-89457 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-89457, 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: Guard sysfs discipline callbacks agai...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  s390/dasd: Guard sysfs discipline callbacks against unallocated private data  Several sysfs show/store handlers call a discipline callback that dereferences device-\u003Eprivate, either directly or through the DASD_DEFINE_ATTR() macro. During dasd_generic_set_online() the discipline is assigned before check_device() allocates device-\u003Eprivate, so an unprivileged read of one of these world-readable attributes in that window dereferences a NULL pointer and panics.  Guard the dereference inside each callback that actually touches device-\u003Eprivate.",
  "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-2026-89457",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89457",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.111-1",
      "fix": "DEBIAN-CVE-2026-89457",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89457",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-89457",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89457",
      "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-2026-89457",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89457",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}