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    CVE-2018-12904

    In arch/x86/kvm/vmx.c in the Linux kernel before 4.17.2, when nested virtualization is used, local attackers could cause L1 KVM guests to VMEXIT, potentially allowing privilege escalations and denial of service attacks due to lack of checking of CPL.

    Published:Jun 12, 2018
    Last Modified:Nov 21, 2024
    EPS:Jun 27, 2018
    EPSS Score:0.00182
    CVSS Score:4.9

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    https://bugs.chromium.org/p/project-zero/issues/detail?id=1589https://www.exploit-db.com/exploits/44944/https://bugs.chromium.org/p/project-zero/issues/detail?id=1589https://www.exploit-db.com/exploits/44944/https://www.exploit-db.com/exploits/44944

    Common Weakness Enumeration

    CWE-284 Improper Access Control

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=727ba748e110b4de50d142edca9d6a9b7e6111d8
    https://bugs.chromium.org/p/project-zero/issues/detail?id=1589
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.2
    https://github.com/torvalds/linux/commit/727ba748e110b4de50d142edca9d6a9b7e6111d8
    https://usn.ubuntu.com/3752-1/
    https://usn.ubuntu.com/3752-2/
    https://usn.ubuntu.com/3752-3/
    https://www.exploit-db.com/exploits/44944/
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=727ba748e110b4de50d142edca9d6a9b7e6111d8
    https://bugs.chromium.org/p/project-zero/issues/detail?id=1589
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.2
    https://github.com/torvalds/linux/commit/727ba748e110b4de50d142edca9d6a9b7e6111d8
    https://usn.ubuntu.com/3752-1/
    https://usn.ubuntu.com/3752-2/
    https://usn.ubuntu.com/3752-3/
    https://www.exploit-db.com/exploits/44944/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High