UBUNTU-CVE-2024-26705

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    UBUNTU-CVE-2024-26705

    Published: 3 Apr 2024Last Modified: 6 Feb 2026
    Upstream:
    CVE-2024-26705

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: parisc: BTLB: Fix crash when setting up BTLB at CPU bringup When using hotplug and bringing up a 32-bit CPU, ask the firmware about the BTLB information to set up the static (block) TLB entries. For that write access to the static btlb_info struct is needed, but since it is marked __ro_after_init the kernel segfaults with missing write permissions. Fix the crash by dropping the __ro_after_init annotation.

    References: https://ubuntu.com/security/CVE-2024-26705, https://git.kernel.org/linus/913b9d443a0180cf0de3548f1ab3149378998486, https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b, https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b, https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486, https://www.cve.org/CVERecord?id=CVE-2024-26705

    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-2024-26705 | CVE-DB