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CVE-2024-57875 – Linux kernel Drupal Uninitialized Pointer

The following table lists the changes that have been made to the
CVE-2024-57875 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jan. 11, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved:

    block: RCU protect disk->conv_zones_bitmap

    Ensure that a disk revalidation changing the conventional zones bitmap
    of a disk does not cause invalid memory references when using the
    disk_zone_is_conv() helper by RCU protecting the disk->conv_zones_bitmap
    pointer.

    disk_zone_is_conv() is modified to operate under the RCU read lock and
    the function disk_set_conv_zones_bitmap() is added to update a disk
    conv_zones_bitmap pointer using rcu_replace_pointer() with the disk
    zone_wplugs_lock spinlock held.

    disk_free_zone_resources() is modified to call
    disk_update_zone_resources() with a NULL bitmap pointer to free the disk
    conv_zones_bitmap. disk_set_conv_zones_bitmap() is also used in
    disk_update_zone_resources() to set the new (revalidated) bitmap and
    free the old one.
    Added Reference https://git.kernel.org/stable/c/493326c4f10cc71a42c27fdc97ce112182ee4cbc
    Added Reference https://git.kernel.org/stable/c/d7cb6d7414ea1b33536fa6d11805cb8dceec1f97
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