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    CVE-2018-7550

    The load_multiboot function in hw/i386/multiboot.c in Quick Emulator (aka QEMU) allows local guest OS users to execute arbitrary code on the QEMU host via a mh_load_end_addr value greater than mh_bss_end_addr, which triggers an out-of-bounds read or write memory access.

    Published:Feb 27, 2018
    Last Modified:Nov 21, 2024
    EPS:Mar 1, 2018
    EPSS Score:0.00099
    CVSS Score:8.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Qemu
    Product
    Qemu
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    Redhat
    Product
    Openstack

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    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://www.securityfocus.com/bid/103181
    https://access.redhat.com/errata/RHSA-2018:1369
    https://access.redhat.com/errata/RHSA-2018:2462
    https://bugzilla.redhat.com/show_bug.cgi?id=1549798
    https://github.com/orangecertcc/security-research/security/advisories/GHSA-f49v-45qp-cv53
    https://lists.debian.org/debian-lts-announce/2018/04/msg00015.html
    https://lists.debian.org/debian-lts-announce/2018/04/msg00016.html
    https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
    https://lists.gnu.org/archive/html/qemu-devel/2018-02/msg06890.html
    https://usn.ubuntu.com/3649-1/
    https://www.debian.org/security/2018/dsa-4213
    http://www.securityfocus.com/bid/103181
    https://access.redhat.com/errata/RHSA-2018:1369
    https://access.redhat.com/errata/RHSA-2018:2462
    https://bugzilla.redhat.com/show_bug.cgi?id=1549798
    https://github.com/orangecertcc/security-research/security/advisories/GHSA-f49v-45qp-cv53
    https://lists.debian.org/debian-lts-announce/2018/04/msg00015.html
    https://lists.debian.org/debian-lts-announce/2018/04/msg00016.html
    https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
    https://lists.gnu.org/archive/html/qemu-devel/2018-02/msg06890.html
    https://usn.ubuntu.com/3649-1/
    https://www.debian.org/security/2018/dsa-4213

    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