{
    "id": "CVE-2015-8660",
    "published": "2015-12-28 11:59:08",
    "last_modified": "2026-06-17 00:34:59",
    "cvss_score": "6.7",
    "cvss_severity": "MEDIUM",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-264",
    "description": "The ovl_setattr function in fs/overlayfs/inode.c in the Linux kernel through 4.3.3 attempts to merge distinct setattr operations, which allows local users to bypass intended access restrictions and modify the attributes of arbitrary overlay files via a crafted application.",
    "epss_score": "0.22204",
    "epss_percentile": "0.97604",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-27 18:17:15",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "linux",
            "product": "linux_kernel"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "40688",
            "title": "Linux Kernel (Ubuntu / Fedora / RedHat) - 'Overlayfs' Local Privilege Escalation (Metasploit)",
            "date": "2016-11-02",
            "url": "https://www.exploit-db.com/exploits/40688"
        },
        {
            "source": "exploit-db",
            "ref_id": "39230",
            "title": "Linux Kernel 4.3.3 - 'overlayfs' Local Privilege Escalation (2)",
            "date": "2016-01-12",
            "url": "https://www.exploit-db.com/exploits/39230"
        },
        {
            "source": "exploit-db",
            "ref_id": "39166",
            "title": "Linux Kernel 4.3.3 (Ubuntu 14.04/15.10) - 'overlayfs' Local Privilege Escalation (1)",
            "date": "2016-01-05",
            "url": "https://www.exploit-db.com/exploits/39166"
        }
    ],
    "refs_list": [
        "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=acff81ec2c79492b180fade3c2894425cd35a545",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00040.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.html",
        "http://packetstormsecurity.com/files/135151/Ubuntu-14.04-LTS-15.10-overlayfs-Local-Root.html",
        "http://rhn.redhat.com/errata/RHSA-2016-1532.html",
        "http://rhn.redhat.com/errata/RHSA-2016-1539.html",
        "http://rhn.redhat.com/errata/RHSA-2016-1541.html",
        "http://www.openwall.com/lists/oss-security/2015/12/23/5",
        "http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html",
        "http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html",
        "http://www.securityfocus.com/bid/79671",
        "http://www.securitytracker.com/id/1034548",
        "http://www.ubuntu.com/usn/USN-2857-1",
        "http://www.ubuntu.com/usn/USN-2857-2",
        "http://www.ubuntu.com/usn/USN-2858-1",
        "http://www.ubuntu.com/usn/USN-2858-2",
        "http://www.ubuntu.com/usn/USN-2858-3",
        "https://bugzilla.redhat.com/show_bug.cgi?id=1291329",
        "https://github.com/torvalds/linux/commit/acff81ec2c79492b180fade3c2894425cd35a545",
        "https://www.exploit-db.com/exploits/39166/",
        "https://www.exploit-db.com/exploits/39230/",
        "https://www.exploit-db.com/exploits/40688/",
        "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=acff81ec2c79492b180fade3c2894425cd35a545",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html"
    ]
}