CVE-2025-40221
BaseFortify
Publication date: 2025-12-04
Last updated on: 2025-12-04
Assigner: kernel.org
Description
Description
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Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
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AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability in the Linux kernel's media pci mg4b driver involves a potential leak of uninitialized stack data to userspace. The issue occurs because the 'scan' structure was not zeroed before use, which could allow sensitive or unintended data from the stack to be exposed. The fix ensures that the 'scan' structure is properly zeroed to prevent this data leak.
How can this vulnerability impact me? :
The vulnerability could lead to unintended disclosure of sensitive or residual data from the kernel stack to userspace applications. This might allow an attacker or unprivileged user to access information they should not have, potentially leading to information leakage or aiding further attacks.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update your Linux kernel to the version that includes the fix for the uninitialized iio scan data in the mg4b PCI driver. This ensures that the scan structure is properly zeroed before use, preventing potential leakage of uninitialized stack data to userspace.