CVE-2026-98501
Received
Received - Intake
Use-After-Free in Linux Kernel HID ALPS Driver
Vulnerability report for CVE-2026-98501, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-18
Last updated on: 2026-10-18
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
HID: alps: fix use-after-free on input2 registration failure
alps_input_configured() stores data->input2 before calling
input_register_device(). If registration fails, input_free_device()
frees the input device but data->input2 still points to the freed memory.
alps_input_configured() calls hid_hw_open() before allocating input2, so
URBs are already active and raw_event can fire during the failure window.
A U1_SP_ABSOLUTE_REPORT_ID report arriving then causes u1_raw_event()
to dereference the freed data->input2 -> use-after-free.
Fix by only storing input2 into drvdata after successful registration
and adding a NULL guard in the raw_event path.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 2562756dde550901c224e3805102bdfc17e7d13a |
| Linux | Linux | 2562756dde550901c224e3805102bdfc17e7d13a |
| Linux | Linux | 2562756dde550901c224e3805102bdfc17e7d13a |
| Linux | Linux | 2562756dde550901c224e3805102bdfc17e7d13a |
| Linux | Linux | 2562756dde550901c224e3805102bdfc17e7d13a |
| Linux | Linux | 2562756dde550901c224e3805102bdfc17e7d13a |
| Linux | Linux | 2562756dde550901c224e3805102bdfc17e7d13a |
| Linux | Linux | 2562756dde550901c224e3805102bdfc17e7d13a |
| Linux | Linux | 4.8 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
