ovl: keep err zero after successful ovl_cache_get()_CVE-2026-53174

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-06-25T08:38:51.366Z",
    "modified": "2026-06-28T06:39:47.801Z",
    "type": "cve",
    "title": "ovl: keep err zero after successful ovl_cache_get()",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/e7051909a01bfb883bfa78b27514854068ac4b85\nhttps://git.kernel.org/stable/c/1711b6ed6953cee5940ca4c3a6e77f1b3798cee2",
    "id": "CVE-2026-53174",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux d25e4b739f8378419f990983f2542160e79738c5\nLinux Linux d25e4b739f8378419f990983f2542160e79738c5\nLinux Linux 6.19",
    "sourceHref": "",
    "cvss": {
        "score": 7.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "d25e4b739f8378419f990983f2542160e79738c5",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}