device mapper

  1. CVE-2024-23851 DM IOCTL Patch: Linux Kernel Robustness Fix

    The Linux kernel received a targeted robustness fix for a device‑mapper ioctl bug tracked as CVE‑2024‑23851: a missing check in copy_params (drivers/md/dm-ioctl.c) could let an ioctl request lead the kernel to try to allocate more than INT_MAX bytes and crash, producing a local denial‑of‑service...
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    • device mapper ioctl vulnerability kernel patching linux kernel
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  2. CVE-2025-38063: Linux Device Mapper IO Throttle Fix in Azure Linux

    A targeted fix landed in the Linux device-mapper subsystem to stop an unexpected IO throttle that could occur when a flush request carried the REQ_PREFLUSH flag; Microsoft’s public advisory lists Azure Linux as the Microsoft-distributed product that “includes this open‑source library and is...
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    • azure linux device mapper io throttle linux kernel
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  3. Linux Kernel dm Cleanup Patch CVE-2024-50277: Defensive Fix for Allocation Failures

    A small, defensive upstream patch in the Linux kernel closed CVE-2024-50277 — a device-mapper (dm) crash that occurs when blk_alloc_disk fails and leaves md->disk set to an error pointer that is later dereferenced during device cleanup. The flaw is not a remote, privilege-escalation exploit; it...
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    • defensive programming device mapper kernel patch linux kernel
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    • Forum: Security Alerts