{
  "cveId": "CVE-2026-98242",
  "url": "https://patchblox.com/security/cve/CVE-2026-98242",
  "summary": "CVE-2026-98242 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98242 (version 7.2.8-1), released October 6, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  dma-buf: Fix silent overflow for phys vec to sgt...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  dma-buf: Fix silent overflow for phys vec to sgt  In case MMIO size is bigger than 4G and peer2peer DMA goes through host bridge, we trigger a code path that assigns the total linked IOVA (which is greater than 4G) to mapped_len.  Previously, \u0060mapped_len\u0060 was declared as 32-bit \u0060unsigned int\u0060. When accumulating \u0060size_t\u0060 lengths, this leads to a silent wrap-around. This truncation causes truncated lengths to be passed to functions like \u0060fill_sg_entry()\u0060.  Fix this by changing \u0060mapped_len\u0060 to \u0060size_t\u0060 (64-bit). While at it, fix similar potential overflow issues in \u0060calc_sg_nents\u0060 by using \u0060check_add_overflow()\u0060 for \u0060nents\u0060 and using \u0060unsigned int\u0060 for the loop iterator in \u0060fill_sg_entry\u0060 to match.",
  "published": "2026-10-06T09:18:12Z",
  "severity": "",
  "epss": 0.00155,
  "epssPercentile": 0.0471,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.8-1",
      "fix": "DEBIAN-CVE-2026-98242",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98242",
      "released": "2026-10-06T21:56:27Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}