{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.8-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  erofs: ensure valid f_path for page cache sharing  Previously, backing files for page cache sharing were set up with f_path left as NULL (only f_inode was valid).  It worked, but a recent mincore fix relies on f_path.mnt and crashes (found by \"erofs/028\" on 7.2-rc4):   BUG: kernel NULL pointer dereference, address: 0000000000000018  #PF: supervisor read access in kernel mode  #PF: error_code(0x0000) - not-present page  PGD 0 P4D 0  Oops: Oops: 0000 [#1] SMP PTI  CPU: 3 UID: 0 PID: 675528 Comm: fincore Not tainted 7.2.0-rc4-00002-g[]-dirty #1 PREEMPT(lazy)  Hardware name: Red Hat KVM, BIOS 1.16.0-4.al8 04/01/2014  RIP: 0010:__do_sys_mincore+0xc0/0x2c0  ...  Specify valid paths using valid disconnected dentries together with erofs_ishare_mnt instead of leaving f_path empty, so they are more like real backing files in a pseudo filesystem and standard backing_file_open() can be used directly.",
  "id": "DEBIAN-CVE-2026-80697",
  "modified": "2026-08-29T04:47:37.521875756Z",
  "published": "2026-08-28T08:16:55.187Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-80697"
    }
  ],
  "upstream": [
    "CVE-2026-80697"
  ]
}