{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7bb1eb45e43c4730cbc5a48b9e9295049fccdacb"
            },
            {
              "fixed": "6577df7dc7a7de128442b6192c7a32195c923480"
            },
            {
              "fixed": "1635c2acdde86c4f555b627aec873c8677c421ed"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43106.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: fix incorrect dentry refcount in cachefiles_cull()\n\nThe patch mentioned below changed cachefiles_bury_object() to expect 2\nreferences to the 'rep' dentry.  Three of the callers were changed to\nuse start_removing_dentry() which takes an extra reference so in those\ncases the call gets the expected references.\n\nHowever there is another call to cachefiles_bury_object() in\ncachefiles_cull() which did not need to be changed to use\nstart_removing_dentry() and so was not properly considered.\nIt still passed the dentry with just one reference so the net result is\nthat a reference is lost.\n\nTo meet the expectations of cachefiles_bury_object(), cachefiles_cull()\nmust take an extra reference before the call.  It will be dropped by\ncachefiles_bury_object().",
  "id": "CVE-2026-43106",
  "modified": "2026-07-08T05:38:07.624927Z",
  "published": "2026-05-06T07:40:34.365Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1635c2acdde86c4f555b627aec873c8677c421ed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6577df7dc7a7de128442b6192c7a32195c923480"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43106.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43106"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "cachefiles: fix incorrect dentry refcount in cachefiles_cull()"
}