CVE-2026-31524
Memory Leak and Out-of-Bounds Read in Linux ASUS HID Driver
Publication date: 2026-04-22
Last updated on: 2026-04-28
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 | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | From 5.11 (inc) to 5.15.203 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.168 (exc) |
| linux | linux_kernel | From 6.13 (inc) to 6.18.21 (exc) |
| linux | linux_kernel | From 6.19 (inc) to 6.19.11 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.6.131 (exc) |
| linux | linux_kernel | From 6.7 (inc) to 6.12.80 (exc) |
| linux | linux_kernel | From 4.14 (inc) to 5.10.253 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-401 | The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the Linux kernel's handling of ASUS HID devices, specifically in the asus_report_fixup() function.
The function was returning a newly allocated memory buffer using kmemdup(), but it never freed this memory, causing a memory leak.
The fix involved switching to devm_kzalloc(), which manages memory automatically and frees it when the device is removed.
Additionally, a harmless out-of-bounds read was fixed by ensuring only the original descriptor size is copied.
How can this vulnerability impact me? :
The primary impact of this vulnerability is a memory leak in the Linux kernel when handling ASUS HID devices.
Memory leaks can lead to increased memory usage over time, potentially degrading system performance or causing instability if the leak is significant.
However, there is no indication of direct security compromise such as privilege escalation or data corruption from this vulnerability.
What immediate steps should I take to mitigate this vulnerability?
The vulnerability in the Linux kernel related to the asus_report_fixup() function has been resolved by switching to devm_kzalloc() to manage memory automatically. To mitigate this vulnerability, you should update your Linux kernel to a version that includes this fix.