CVE-2026-64367 HID: hid-goodix-spi: validate report size to prevent stack buffer overflow
A stack buffer overflow in the Linux kernel Goodix SPI HID driver allows local attackers to execute arbitrary code or escalate privileges via a crafted HID report.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-64367?
CVE-2026-64367 is a high-severity memory corruption vulnerability in Linux kernel, published on 25 Jul 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: hid-goodix-spi: validate report size to prevent stack buffer overflow
goodix_hid_set_raw_report() builds a protocol frame in a 128-byte stack buffer (tmp_buf), writing an 11-12 byte header followed by the caller-supplied report data. The HID core caps report size at HID_MAX_BUFFER_SIZE (16384) by default, while the driver does not set hid_ll_driver.max_buffer_size and performs no bounds checking before copying the payload:
memcpy(tmp_buf + tx_len, buf, len);
A hidraw SET_REPORT ioctl with a report larger than ~116 bytes overflows the stack buffer.
Add a size check after constructing the header, rejecting reports that would exceed the buffer capacity.
Discovered by Atuin - Automated Vulnerability Discovery Engine.
Weakness: CWE-787
Which versions are affected by CVE-2026-64367?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-64367?
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-2026-64367 being exploited?
There is no known exploitation of CVE-2026-64367 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-64367, DEBIAN-CVE-2026-64367, GHSA-p4f3-xcv2-3qcx, ROOT-OS-UBUNTU-2204-CVE-2026-64367, UBUNTU-CVE-2026-64367.