CVE-2021-46920

    Dashboard / Vulnerabilities / CVE-2021-46920

    CVE-2021-46920

    Published: 27 Feb 2024Last Modified: 14 Mar 2026

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback Current code blindly writes over the SWERR and the OVERFLOW bits. Write back the bits actually read instead so the driver avoids clobbering the OVERFLOW bit that comes after the register is read.

    References: https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8, https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d, https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7f

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2021-46920 | CVE-DB