CVE-2025-39869
BaseFortify
Publication date: 2025-09-23
Last updated on: 2025-11-03
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | 6.1.153-1 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a critical memory allocation bug in the Linux kernel's EDMA driver. Specifically, the queue_priority_map was allocated with insufficient memory because the code used sizeof(s8) instead of the correct size for a 2D array. This caused out-of-bounds memory writes when the code accessed elements of queue_priority_map, leading to memory corruption and kernel crashes on ARM platforms during the EDMA driver probe.
How can this vulnerability impact me? :
The vulnerability can cause kernel crashes due to out-of-bounds memory writes and memory corruption. On affected ARM platforms, such as BeagleBoard-X15, this can result in system instability or denial of service during the EDMA driver initialization, potentially disrupting normal operation.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update the Linux kernel to a version that includes the fix for the memory allocation size in the edma driver (specifically the fix in edma_setup_from_hw() for queue_priority_map). This prevents out-of-bounds memory writes and kernel crashes on affected ARM platforms.