{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.16.8-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  ceph: fix crash after fscrypt_encrypt_pagecache_blocks() error  The function move_dirty_folio_in_page_array() was created by commit ce80b76dd327 (\"ceph: introduce ceph_process_folio_batch() method\") by moving code from ceph_writepages_start() to this function.  This new function is supposed to return an error code which is checked by the caller (now ceph_process_folio_batch()), and on error, the caller invokes redirty_page_for_writepage() and then breaks from the loop.  However, the refactoring commit has gone wrong, and it by accident, it always returns 0 (= success) because it first NULLs the pointer and then returns PTR_ERR(NULL) which is always 0.  This means errors are silently ignored, leaving NULL entries in the page array, which may later crash the kernel.  The simple solution is to call PTR_ERR() before clearing the pointer.",
  "id": "DEBIAN-CVE-2025-39878",
  "modified": "2026-09-01T19:47:45.967796465Z",
  "published": "2025-09-23T06:15:47.377Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2025-39878"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2025-39878"
  ]
}