{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d25e4b739f8378419f990983f2542160e79738c5"
            },
            {
              "fixed": "e7051909a01bfb883bfa78b27514854068ac4b85"
            },
            {
              "fixed": "1711b6ed6953cee5940ca4c3a6e77f1b3798cee2"
            }
          ],
          "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": "7.0.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53174.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\novl: keep err zero after successful ovl_cache_get()\n\novl_iterate_merged() stores PTR_ERR(cache) in err before checking\nIS_ERR(cache). On success err holds the truncated cache pointer and\ncan be returned as a bogus non-zero error.\n\nThe syzbot reproducer reaches this through overlay-on-overlay readdir:\n\n  getdents64\n    iterate_dir(outer overlay file)\n      ovl_iterate_merged()\n        ovl_cache_get()\n          ovl_dir_read_merged()\n            ovl_dir_read()\n              iterate_dir(inner overlay file)\n                ovl_iterate_merged()\n\nOnly compute PTR_ERR(cache) on the error path.",
  "id": "CVE-2026-53174",
  "modified": "2026-08-12T03:51:39.984521008Z",
  "published": "2026-06-25T08:38:51.366Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1711b6ed6953cee5940ca4c3a6e77f1b3798cee2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7051909a01bfb883bfa78b27514854068ac4b85"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53174.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53174"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "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": "ovl: keep err zero after successful ovl_cache_get()"
}