CVE-2026-98501

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.

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References

Other References

https://git.kernel.org/stable/c/2e55d76e6e8a756f6d87c241de975599f82b02fa https://git.kernel.org/stable/c/443f6b93442b10b972a16f57ceaaea75b77892b6 https://git.kernel.org/stable/c/47e5e177e9e4e10da6f2759d5ce8d049e33efdc4 https://git.kernel.org/stable/c/5a8ad63158165bacd6a1d7420e0fe5364c913b06 https://git.kernel.org/stable/c/64f824dccfd316fd3db8ea1cc4e8a76ad6a02740 https://git.kernel.org/stable/c/925da1d2a24787f24872de13a4680437c54de179 https://git.kernel.org/stable/c/d3aba3442798ce4a4c8ce3104d7b286d61e605f9 https://git.kernel.org/stable/c/ef8ca5bb4c8b9696f38b1bebce1c851baa02b77b

Frequently Asked Questions

What is CVE-2026-98501? +

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.

How do I check if I'm vulnerable to CVE-2026-98501? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-98501

Description

References

Other References

Frequently Asked Questions

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