CVE-2025-68749
Race Condition in Linux Kernel IVPU BO Unbinding Causes Memory Leak
Publication date: 2025-12-24
Last updated on: 2026-02-26
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | From 6.13 (inc) to 6.17.13 (exc) |
| linux | linux_kernel | From 6.18 (inc) to 6.18.2 (exc) |
| linux | linux_kernel | From 6.8 (inc) to 6.12.68 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-362 | The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a race condition in the Linux kernel's accel/ivpu component related to unbinding buffer objects (BOs). Specifically, when ivpu_gem_bo_free() removes a BO from the BOs list before it is unmapped, it can cause a 'Memory manager not clean during takedown' warning. The issue arises because file_priv_unbind() then triggers a warning during context teardown in drm_mm_takedown(). The fix involves protecting the unmapping sequence with a lock (bo_list_lock) to ensure the BO is fully unmapped when removed from the list, preventing the race condition.
How can this vulnerability impact me? :
This vulnerability can lead to warnings and potential instability during the teardown of contexts in the Linux kernel's memory management for the ivpu accelerator. It may cause improper cleanup of memory mappings, which could result in resource leaks or unexpected behavior in systems relying on this component. However, no direct security impact such as privilege escalation or data corruption is described.
What immediate steps should I take to mitigate this vulnerability?
Apply the patch or update to the fixed version of the Linux kernel that resolves the race condition in the accel/ivpu component by protecting the unmapping sequence with bo_list_lock. This ensures proper cleanup during context teardown and prevents the 'Memory manager not clean during takedown' warning.