CVE-2024-26705

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    CVE-2024-26705

    Published: 3 Apr 2024Last Modified: 12 Aug 2026

    Summary: parisc: BTLB: Fix crash when setting up BTLB at CPU bringup

    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://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b, https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486, https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b, https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26705.json, https://nvd.nist.gov/vuln/detail/CVE-2024-26705, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- e5ef93d02d6c9cc3a14e7348481c9e41a528caa1
    Fixed -54944f45470af5965fb9c28cf962ec30f38a8f5b

    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-2024-26705 | CVE-DB