CVE-2025-68789
BaseFortify
Publication date: 2026-01-13
Last updated on: 2026-02-10
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 | * |
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 use-after-free issue in the Linux kernel's ibmpex driver, specifically in the ibmpex_high_low_store() function. The function retrieves driver data without validating it, which can lead to a race condition where the sysfs callback is called after the data structure has been freed. This can cause the system to use memory that has already been released, potentially leading to crashes or other unintended behavior. The fix involves adding a NULL check after retrieving the driver data and reordering operations to prevent time-of-check to time-of-use (TOCTOU) race conditions.
How can this vulnerability impact me? :
This vulnerability can lead to use-after-free conditions, which may cause system instability, crashes, or potentially allow an attacker to execute arbitrary code or escalate privileges by exploiting the race condition in the kernel driver.
What immediate steps should I take to mitigate this vulnerability?
Apply the patch or update to a Linux kernel version where the ibmpex_high_low_store() function has been fixed to include a NULL check after dev_get_drvdata() and reordered deletion operations to prevent the use-after-free race condition.