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    CVE-2018-19407

    The vcpu_scan_ioapic function in arch/x86/kvm/x86.c in the Linux kernel through 4.19.2 allows local users to cause a denial of service (NULL pointer dereference and BUG) via crafted system calls that reach a situation where ioapic is uninitialized.

    Published:Nov 20, 2018
    Last Modified:Nov 21, 2024
    EPS:Nov 21, 2018
    EPSS Score:0.00083
    CVSS Score:5.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    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…
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    References

    http://www.securityfocus.com/bid/105987
    https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
    https://lkml.org/lkml/2018/11/20/580
    https://usn.ubuntu.com/3871-1/
    https://usn.ubuntu.com/3871-3/
    https://usn.ubuntu.com/3871-4/
    https://usn.ubuntu.com/3871-5/
    https://usn.ubuntu.com/3872-1/
    https://usn.ubuntu.com/3878-1/
    https://usn.ubuntu.com/3878-2/
    https://usn.ubuntu.com/3879-1/
    https://usn.ubuntu.com/3879-2/
    http://www.securityfocus.com/bid/105987
    https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
    https://lkml.org/lkml/2018/11/20/580
    https://usn.ubuntu.com/3871-1/
    https://usn.ubuntu.com/3871-3/
    https://usn.ubuntu.com/3871-4/
    https://usn.ubuntu.com/3871-5/
    https://usn.ubuntu.com/3872-1/
    https://usn.ubuntu.com/3878-1/
    https://usn.ubuntu.com/3878-2/
    https://usn.ubuntu.com/3879-1/
    https://usn.ubuntu.com/3879-2/

    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