CVE-2024-57875 - Linux kernel Drupal Uninitialized Pointer

CVE-2024-57875 - Linux kernel Drupal Uninitialized Pointer

https://cvefeed.io/rssfeed/latest.atom / Sat, 01/11/2025 - 21:34
CVE ID : CVE-2024-57875
Published : Jan. 11, 2025, 3:15 p.m. | 5 hours, 19 minutes ago
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.
Severity: 0.0 | NA
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