{
  "cveId": "CVE-2026-64254",
  "url": "https://patchblox.com/security/cve/CVE-2026-64254",
  "summary": "CVE-2026-64254 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-64254, released July 25, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  NTB: epf: Avoid pci_iounmap() with offset when P...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  NTB: epf: Avoid pci_iounmap() with offset when PEER_SPAD and CONFIG share BAR  When BAR_PEER_SPAD and BAR_CONFIG share one PCI BAR, the module teardown path ends up calling pci_iounmap() on the same iomem with some offset, which is unnecessary and triggers a kernel warning like the following:    Trying to vunmap() nonexistent vm area (0000000069a5ffe8)   WARNING: mm/vmalloc.c:3470 at vunmap\u002B0x58/0x68, CPU#5: modprobe/2937   [...]   Call trace:    vunmap\u002B0x58/0x68 (P)    iounmap\u002B0x34/0x48    pci_iounmap\u002B0x2c/0x40    ntb_epf_pci_remove\u002B0x44/0x80 [ntb_hw_epf]    pci_device_remove\u002B0x48/0xf8    device_remove\u002B0x50/0x88    device_release_driver_internal\u002B0x1c8/0x228    driver_detach\u002B0x50/0xb0    bus_remove_driver\u002B0x74/0x100    driver_unregister\u002B0x34/0x68    pci_unregister_driver\u002B0x34/0xa0    ntb_epf_pci_driver_exit\u002B0x14/0xfe0 [ntb_hw_epf]   [...]  Fix it by unmapping only when PEER_SPAD and CONFIG use difference bars.",
  "published": "2026-07-24T16:16:55Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00114,
  "epssPercentile": 0.01501,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.177-1",
      "fix": "DEBIAN-CVE-2026-64254",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-64254",
      "released": "2026-07-25T13:43:44Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.95-1",
      "fix": "DEBIAN-CVE-2026-64254",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-64254",
      "released": "2026-07-25T13:43:44Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.3-1",
      "fix": "DEBIAN-CVE-2026-64254",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-64254",
      "released": "2026-07-25T13:43:44Z"
    }
  ],
  "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"
  }
}