CVE-2025-39875
BaseFortify
Publication date: 2025-09-23
Last updated on: 2025-12-11
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | From 6.14 (inc) to 6.16.8 (exc) |
| linux | linux_kernel | 6.17 |
| linux | linux_kernel | 6.17 |
| linux | linux_kernel | 6.17 |
| linux | linux_kernel | 6.17 |
| linux | linux_kernel | 6.17 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-476 | The product dereferences a pointer that it expects to be valid but is NULL. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a NULL pointer dereference in the Linux kernel's igb driver that occurs during the ethtool loopback test. It happens because the test ring does not have an associated q_vector, as interrupts are usually not added to test rings. A recent code change removed the need to pass a napi_id, so the fix uses 0 as the last parameter to prevent the NULL pointer dereference.
How can this vulnerability impact me? :
The vulnerability can cause the Linux kernel to crash or behave unexpectedly when running the ethtool loopback test on the igb driver, due to a NULL pointer dereference. This may lead to system instability or denial of service during network diagnostics or testing.