UBUNTU-CVE-2020-10702

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    UBUNTU-CVE-2020-10702

    Published: 13 Apr 2020Last Modified: 4 Feb 2026
    Upstream:
    CVE-2020-10702
    Aliases:
    USN-4372-1

    Summary:

    Details: A flaw was found in QEMU in the implementation of the Pointer Authentication (PAuth) support for ARM introduced in version 4.0 and fixed in version 5.0.0. A general failure of the signature generation process caused every PAuth-enforced pointer to be signed with the same signature. A local attacker could obtain the signature of a protected pointer and abuse this flaw to bypass PAuth protection for all programs running on QEMU.

    References: https://ubuntu.com/security/CVE-2020-10702, https://ubuntu.com/security/notices/USN-4372-1, https://www.cve.org/CVERecord?id=CVE-2020-10702

    Affected packages

    Package

    Name: qemu

    Purl: pkg:deb/ubuntu/qemu@1:4.2-3ubuntu5?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:4.2-3ubuntu5

    Affected versions

    1:4.0+dfsg-0ubuntu9

    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
    UBUNTU-CVE-2020-10702 | CVE-DB