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.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linuxNo solution exists | May 15, 2025 | Jan 11, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jan 11, 2025 |
| Ubuntu | — | Upgrade linux-image-6.11.0-1011-gcpUpgrade linux-image-generic-64kUpgrade linux-image-6.11.0-1010-raspiUpgrade linux-image-genericUpgrade linux-image-raspiUpgrade linux-image-lowlatency-64kUpgrade linux-image-azureUpgrade linux-image-6.11.0-1011-awsUpgrade linux-image-6.11.0-21-genericUpgrade linux-image-6.11.0-1011-lowlatencyUpgrade linux-image-realtimeUpgrade linux-image-6.11.0-1017-oemUpgrade linux-image-oem-24.04Upgrade linux-image-gcp-64kUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-oem-24.04bUpgrade linux-image-6.11.0-1013-oracle-64kUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-6.11.0-1007-realtimeUpgrade linux-image-lowlatencyUpgrade linux-image-oracle-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-6.11.0-1011-gcp-64kUpgrade linux-image-gcpUpgrade linux-image-6.11.0-1011-lowlatency-64kUpgrade linux-image-oracleUpgrade linux-image-6.11.0-1012-azure-fdeUpgrade linux-image-6.11.0-1013-oracleUpgrade linux-image-6.11.0-1012-azureUpgrade linux-image-azure-fdeUpgrade linux-image-6.11.0-21-generic-64kUpgrade linux-image-awsUpgrade linux-image-virtualUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-generic-hwe-24.04 | Mar 28, 2025 | Jan 11, 2025 |
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