CVE-2025-39740
BaseFortify
Publication date: 2025-09-11
Last updated on: 2025-11-25
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 | 6.17 |
| linux | linux_kernel | From 5.15.160 (inc) to 5.16 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a potential Use-After-Free (UAF) issue in the Linux kernel's drm/xe/migrate component. It occurs because if an error path is hit, the previous fence object may have already been released (put), and then performing a fence_wait on it could lead to accessing freed memory. The fix involves changing the order of operations to ensure the fence_wait happens before the put, preventing the UAF condition.
How can this vulnerability impact me? :
The vulnerability could lead to a Use-After-Free condition, which may cause system instability, crashes, or potentially allow an attacker to execute arbitrary code or escalate privileges by exploiting the freed memory access in the Linux kernel's graphics subsystem.