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    CVE-2018-7858

    Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.

    Published:Mar 8, 2018
    Last Modified:Nov 21, 2024
    EPS:Mar 12, 2018
    EPSS Score:0.00074
    CVSS Score:5.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Opensuse
    Product
    Leap
    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 Weakness Enumeration

    CWE-125 Out-of-bounds Read

    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://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html
    http://www.openwall.com/lists/oss-security/2018/03/09/1
    http://www.securityfocus.com/bid/103350
    https://access.redhat.com/errata/RHSA-2018:1369
    https://access.redhat.com/errata/RHSA-2018:1416
    https://access.redhat.com/errata/RHSA-2018:2162
    https://bugzilla.redhat.com/show_bug.cgi?id=1553402
    https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html
    https://usn.ubuntu.com/3649-1/
    http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html
    http://www.openwall.com/lists/oss-security/2018/03/09/1
    http://www.securityfocus.com/bid/103350
    https://access.redhat.com/errata/RHSA-2018:1369
    https://access.redhat.com/errata/RHSA-2018:1416
    https://access.redhat.com/errata/RHSA-2018:2162
    https://bugzilla.redhat.com/show_bug.cgi?id=1553402
    https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html
    https://usn.ubuntu.com/3649-1/

    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