UBUNTU-CVE-2021-47098

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    UBUNTU-CVE-2021-47098

    Published: 4 Mar 2024Last Modified: 24 Oct 2025
    Upstream:
    CVE-2021-47098

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: hwmon: (lm90) Prevent integer overflow/underflow in hysteresis calculations Commit b50aa49638c7 ("hwmon: (lm90) Prevent integer underflows of temperature calculations") addressed a number of underflow situations when writing temperature limits. However, it missed one situation, seen when an attempt is made to set the hysteresis value to MAX_LONG and the critical temperature limit is negative. Use clamp_val() when setting the hysteresis temperature to ensure that the provided value can never overflow or underflow.

    References: https://ubuntu.com/security/CVE-2021-47098, https://git.kernel.org/linus/55840b9eae5367b5d5b29619dc2fb7e4596dba46, https://git.kernel.org/stable/c/d105f30bea9104c590a9e5b495cb8a49bdfe405f, https://git.kernel.org/stable/c/55840b9eae5367b5d5b29619dc2fb7e4596dba46, https://www.cve.org/CVERecord?id=CVE-2021-47098

    Affected packages

    Package

    Name: linux-hwe-edge

    Purl: pkg:deb/ubuntu/[email protected]~16.04.1?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-2021-47098 | CVE-DB