{
  "cveId": "CVE-2026-99113",
  "url": "https://patchblox.com/security/cve/CVE-2026-99113",
  "summary": "CVE-2026-99113 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-99113, released November 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "ksmbd: zero the FS_OBJECT_ID_INFORMATION buffer before filling it in",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ksmbd: zero the FS_OBJECT_ID_INFORMATION buffer before filling it in  smb2_get_info_filesystem() reports 64 bytes for FS_OBJECT_ID_INFORMATION, that is the whole of struct object_id_info, but writes only 46 of them:   - objid[] is 16 bytes, and when the volume UUID is not available only    sizeof(stfs.f_fsid) (8) bytes are copied into it;  - extended_info.version_string[] is STRING_LENGTH (28) bytes, and only    strlen(\u00221.1.0\u0022) (5) bytes are copied into it.  The response buffer is zeroed on allocation (kvzalloc() in smb2_allocate_rsp_buf()), so for a standalone request the remaining 31 bytes are zero.  In a compound request they need not be.  The offset of the next response is advanced by the length pinned for the previous one, so if a preceding command wrote its reply into the buffer and then failed, smb2_set_err_rsp() pins only the short error response and the next reply lands inside the area that has already been written.  Only the header is cleared there:  \tmemset((char *)rsp_hdr, 0, sizeof(struct smb2_hdr) \u002B 2);  The client then receives up to 31 bytes of a response it was not meant to see, including one that failed with an access denied error.  Clear the structure before filling it in.  As a side effect version_string is now NUL terminated.",
  "published": "2026-10-28T11:17:30Z",
  "severity": "Low",
  "cvss": 3.1,
  "epss": 0.00173,
  "epssPercentile": 0.06791,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-99113",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-2",
      "fix": "DEBIAN-CVE-2026-99113",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99113",
      "released": "2026-11-03T18:58:21Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.13-1",
      "fix": "DEBIAN-CVE-2026-99113",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99113",
      "released": "2026-11-03T18:58:21Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}