CVE-2025-38135
BaseFortify
Publication date: 2025-07-03
Last updated on: 2025-12-17
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 5.2 (inc) to 5.4.295 (exc) |
| linux | linux_kernel | From 5.5 (inc) to 5.10.239 (exc) |
| linux | linux_kernel | From 5.11 (inc) to 5.15.186 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.142 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.6.94 (exc) |
| linux | linux_kernel | From 6.7 (inc) to 6.12.34 (exc) |
| linux | linux_kernel | From 6.13 (inc) to 6.15.3 (exc) |
| debian | debian_linux | 11.0 |
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 potential NULL pointer dereference in the Linux kernel's serial driver, specifically in the mlb_usio_probe() function. The function devm_ioremap() can return NULL on error, but mlb_usio_probe() did not check for this case, which could lead to a NULL pointer dereference and cause a system crash or instability. The fix involves adding a NULL check after devm_ioremap() to prevent this issue.
How can this vulnerability impact me? :
If exploited or triggered, this vulnerability could cause the affected system to crash or become unstable due to a NULL pointer dereference in the kernel. This could lead to denial of service or unexpected behavior in systems relying on the affected serial driver.
What immediate steps should I take to mitigate this vulnerability?
Apply the patch or update to the Linux kernel version that includes the fix for the null pointer dereference in mlb_usio_probe() by adding a NULL check after devm_ioremap().