CVE-2021-3638

    Dashboard / Vulnerabilities / CVE-2021-3638

    CVE-2021-3638

    Published: 3 Mar 2022Last Modified: 20 Oct 2026

    Summary:

    Details: An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTVPHLLXJ65BUMFBUUZ35F3J632SLFRK/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/, https://security.netapp.com/advisory/ntap-20220407-0003/, https://ubuntu.com/security/CVE-2021-3638, https://bugzilla.redhat.com/show_bug.cgi?id=1979858, https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg01682.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 131b9a05705636086699df15d4a6d328bb2585e8
    Fixed -None

    Affected versions

    v6.1.0
    v6.1.0-rc4
    v6.1.0-rc3
    v6.1.0-rc2
    v6.1.0-rc1
    v6.1.0-rc0

    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