CVE-2026-31524 HID: asus: avoid memory leak in asus_report_fixup()

What is CVE-2026-31524?

CVE-2026-31524 is a medium-severity memory corruption vulnerability in Linux kernel, published on 22 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

HID: asus: avoid memory leak in asus_report_fixup()

The asus_report_fixup() function was returning a newly allocated kmemdup()-allocated buffer, but never freeing it. Switch to devm_kzalloc() to ensure the memory is managed and freed automatically when the device is removed.

The caller of report_fixup() does not take ownership of the returned pointer, but it is permitted to return a pointer whose lifetime is at least that of the input buffer.

Also fix a harmless out-of-bounds read by copying only the original descriptor size.

Weakness: CWE-401

Which versions are affected by CVE-2026-31524?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-31524?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-31524 being exploited?

There is no known exploitation of CVE-2026-31524 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-83189, BELL-CVE-2026-31524, DEBIAN-CVE-2026-31524, GHSA-78q6-rmj2-p97w, ROOT-OS-DEBIAN-11-CVE-2026-31524, ROOT-OS-DEBIAN-12-CVE-2026-31524 and 3 more.