MGASA-2021-0225

    Dashboard / Vulnerabilities / MGASA-2021-0225

    MGASA-2021-0225

    Published: 31 May 2021Last Modified: 16 Apr 2026
    Upstream:
    CVE-2021-33200

    Summary: Updated kernel-linus packages fix security vulnerability

    Details: This kernel-linus update is based on upstream 5.10.41 and fixes at least the following security issue: kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit (CVE-2021-33200). For other upstream fixes, see the referenced changelogs.

    References: https://advisories.mageia.org/MGASA-2021-0225.html, https://bugs.mageia.org/show_bug.cgi?id=28981, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.38, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.39, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.40, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.41

    Affected packages

    Package

    Name: kernel-linus

    Purl: pkg:rpm/mageia/kernel-linus?arch=source&distro=mageia-7

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5.10.41-1.mga7

    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
    MGASA-2021-0225 | CVE-DB