In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Fix reader locking when changing the sub buffer order
The function ring_buffer_subbuf_order_set() updates each ring_buffer_per_cpu and installs new sub buffers that match the requested page order. This operation may be invoked concurrently with readers that rely on some of the modified data, such as the head bit (RB_PAGE_HEAD), or the ring_buffer_per_cpu.pages and reader_page pointers. However, no exclusive access is acquired by ring_buffer_subbuf_order_set(). Modifying the mentioned data while a reader also operates on them can then result in incorrect memory access and various crashes.
Fix the problem by taking the reader_lock when updating a specific ring_buffer_per_cpu in ring_buffer_subbuf_order_set().
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 linux | Jul 27, 2026 | Jul 27, 2026 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Nov 8, 2024 |
| Ubuntu | — | Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.1-1020-realtimeUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-oem-22.04aUpgrade linux-image-oem-22.04cUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-azure-lts-24.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-oem-24.04bUpgrade linux-image-6.8.0-1014-azure-nvidiaUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.8.0-1028-gcpUpgrade linux-image-6.8.0-58-lowlatencyUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-azureUpgrade linux-image-6.8.0-1026-nvidia-lowlatencyUpgrade linux-image-azure-fdeUpgrade linux-image-6.8.0-1024-oracle-64kUpgrade linux-image-ibmUpgrade linux-image-6.11.0-1009-azureUpgrade linux-image-generic-64kUpgrade linux-image-6.11.0-1015-oemUpgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-6.11.0-1009-awsUpgrade linux-image-nvidia-64kUpgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-ibm-classicUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-oem-24.04aUpgrade linux-image-oracle-64kUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-6.8.0-1028-raspiUpgrade linux-image-6.8.0-58-genericUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-kvmUpgrade linux-image-lowlatency-64kUpgrade linux-image-gkeop-6.8Upgrade linux-image-oem-22.04Upgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-raspiUpgrade linux-image-6.8.0-1026-oemUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-gcpUpgrade linux-image-6.8.0-58-generic-64kUpgrade linux-image-generic-lpaeUpgrade linux-image-lowlatencyUpgrade linux-image-nvidiaUpgrade linux-image-raspi-realtimeUpgrade linux-image-azure-nvidiaUpgrade linux-image-oem-22.04bUpgrade linux-image-6.8.0-1027-azureUpgrade linux-image-6.8.0-1024-oracleUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-oem-22.04dUpgrade linux-image-6.8.0-1028-gcp-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-1027-awsUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1023-gkeUpgrade linux-image-genericUpgrade linux-image-6.8.0-58-lowlatency-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-gkeUpgrade linux-image-6.8.0-1026-nvidia-lowlatency-64kUpgrade linux-image-gcp-64kUpgrade linux-image-6.8.0-1026-nvidiaUpgrade linux-image-6.8.0-1010-gkeopUpgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1027-azure-fdeUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-nvidia-6.8Upgrade linux-image-realtimeUpgrade linux-image-virtualUpgrade linux-image-oracleUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-oem-24.04Upgrade linux-image-6.11.0-18-genericUpgrade linux-image-gkeopUpgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-awsUpgrade linux-image-6.8.0-1024-ibmUpgrade linux-image-6.8.0-1026-nvidia-64kUpgrade linux-image-6.11.0-1009-gcp | Feb 20, 2025 | Nov 8, 2024 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub