MGASA-2021-0397

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    MGASA-2021-0397

    Published: 7 Aug 2021Last Modified: 16 Apr 2026

    Summary: Updated kernel packages fix security vulnerabilities

    Details: This kernel update is based on upstream 5.10.56 and fixes at least the following security issues: In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (CVE-2021-34556). In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value (CVE-2021-35477). Other fixes in this update: - btrfs: fix lost inode on log replay after mix of fsync, rename and inode eviction - btrfs: fix race causing unnecessary inode logging during link and rename - watchdog: iTCO_wdt: Fix detection of SMI-off case (fixes sporadic reboots on some systems) - Revert "ACPICA: Fix memory leak caused by _CID repair function", fixing boot failures on some systems - fix another ACPI issue causing some systems to boot slowly or not at all after kernel 5.10.50 - revert: 'scsi: sr: Return appropriate error code when disk is ejected' (fixes DVD opening on resume from suspend or standby, mga #29262) - Revert "usb: renesas-xhci: Fix handling of unknown ROM state" (fixes renesas usb pci stopped working, mga #29285) - Revert "drm/i915: Propagate errors on awaiting already signaled fences" and "drm/i915/gem: Asynchronous cmdparser" (fixes an issue where an app hang can cause X server to hang) For other upstream fixes, see the referenced changelogs.

    References: https://advisories.mageia.org/MGASA-2021-0397.html, https://bugs.mageia.org/show_bug.cgi?id=29311, https://bugs.mageia.org/show_bug.cgi?id=29262, https://bugs.mageia.org/show_bug.cgi?id=29285, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.53, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.54, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.55, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.56

    Affected packages

    Package

    Name: kernel

    Purl: pkg:rpm/mageia/kernel?arch=source&distro=mageia-8

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5.10.56-1.mga8

    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-2021-0397 | CVE-DB