UBUNTU-CVE-2022-50575

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    UBUNTU-CVE-2022-50575

    Published: 22 Oct 2025Last Modified: 30 Sept 2026
    Upstream:
    CVE-2022-50575

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource() As 'kdata.num' is user-controlled data, if user tries to allocate memory larger than(>=) MAX_ORDER, then kcalloc() will fail, it creates a stack trace and messes up dmesg with a warning. Call trace: -> privcmd_ioctl --> privcmd_ioctl_mmap_resource Add __GFP_NOWARN in order to avoid too large allocation warning. This is detected by static analysis using smatch.

    References: https://ubuntu.com/security/CVE-2022-50575, https://www.cve.org/CVERecord?id=CVE-2022-50575, https://git.kernel.org/linus/8b997b2bb2c53b76a6db6c195930e9ab8e4b0c79, https://git.kernel.org/stable/c/0bf874183b32eae2cc20e3c5be38ec3d33e7e564, https://git.kernel.org/stable/c/46026bb057c35f5bb111bf95e00cd8366d2e34d4, https://git.kernel.org/stable/c/4da411086f5ab32f811a89ef804980ec106ebb65, https://git.kernel.org/stable/c/4f983ee5e5de924d93a7bbb4e6f68f38c6256cd5, https://git.kernel.org/stable/c/5d68ae32d132ea2af73bc223fd64c46f85302a8b, https://git.kernel.org/stable/c/8b997b2bb2c53b76a6db6c195930e9ab8e4b0c79, https://git.kernel.org/stable/c/e0c5f1058ed96f2b7487560c4c4cbd768d13d065

    Affected packages

    Package

    Name: linux-hwe-edge

    Purl: pkg:deb/ubuntu/linux-hwe-edge?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.8.0-28.30~16.04.1
    4.8.0-30.32~16.04.1
    4.8.0-32.34~16.04.1
    4.8.0-34.36~16.04.1

    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
    UBUNTU-CVE-2022-50575 | CVE-DB