UBUNTU-CVE-2024-26601

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    UBUNTU-CVE-2024-26601

    Published: 26 Feb 2024Last Modified: 8 Oct 2026
    Upstream:
    CVE-2024-26601
    Aliases:
    USN-6688-1
    USN-6820-1
    USN-6820-2

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: ext4: regenerate buddy after block freeing failed if under fc replay This mostly reverts commit 6bd97bf273bd ("ext4: remove redundant mb_regenerate_buddy()") and reintroduces mb_regenerate_buddy(). Based on code in mb_free_blocks(), fast commit replay can end up marking as free blocks that are already marked as such. This causes corruption of the buddy bitmap so we need to regenerate it in that case.

    References: https://ubuntu.com/security/CVE-2024-26601, https://git.kernel.org/linus/c9b528c35795b711331ed36dc3dbee90d5812d4e, https://ubuntu.com/security/notices/USN-6688-1, https://www.cve.org/CVERecord?id=CVE-2024-26601, https://ubuntu.com/security/notices/USN-6820-1, https://ubuntu.com/security/notices/USN-6821-1, https://ubuntu.com/security/notices/USN-6821-2, https://ubuntu.com/security/notices/USN-6828-1, https://ubuntu.com/security/notices/USN-6820-2, https://ubuntu.com/security/notices/USN-6821-3, https://ubuntu.com/security/notices/USN-6821-4, https://ubuntu.com/security/notices/USN-6871-1, https://ubuntu.com/security/notices/USN-6892-1, https://ubuntu.com/security/notices/USN-6895-1, https://ubuntu.com/security/notices/USN-6895-2, https://ubuntu.com/security/notices/USN-6900-1, https://ubuntu.com/security/notices/USN-6895-3, https://ubuntu.com/security/notices/USN-6919-1, https://ubuntu.com/security/notices/USN-6895-4

    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-2024-26601 | CVE-DB