{
  "cveId": "CVE-2026-43185",
  "url": "https://patchblox.com/security/cve/CVE-2026-43185",
  "summary": "CVE-2026-43185 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-43185, released May 15, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "ksmbd: fix signededness bug in smb_direct_prepare_negotiation()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ksmbd: fix signededness bug in smb_direct_prepare_negotiation()  smb_direct_prepare_negotiation() casts an unsigned __u32 value from sp-\u003Emax_recv_size and req-\u003Epreferred_send_size to a signed int before computing min_t(int, ...). A maliciously provided preferred_send_size of 0x80000000 will return as smaller than max_recv_size, and then be used to set the maximum allowed alowed receive size for the next message.  By sending a second message with a large value (\u003E1420 bytes) the attacker can then achieve a heap buffer overflow.  This fix replaces min_t(int, ...) with min_t(u32)",
  "published": "2026-05-06T12:16:37Z",
  "severity": "Moderate",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00887,
  "epssPercentile": 0.59531,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-43185",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-2",
      "fix": "DEBIAN-CVE-2026-43185",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-43185",
      "released": "2026-05-15T16:01:09Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.19.6-1",
      "fix": "DEBIAN-CVE-2026-43185",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-43185",
      "released": "2026-05-15T16:01:09Z"
    }
  ],
  "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"
  }
}