Stack-based buffer overflow in Linux kernel - CVE-2026-64274

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Main Vulnerability Database Vulnerabilities #VU139719

Stack-based buffer overflow in Linux kernel - CVE-2026-64274

Published: July 27, 2026


Vulnerability identifier: #VU139719
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-64274
CWE-ID: CWE-121
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause memory corruption.

The vulnerability exists due to a stack-based out-of-bounds write in goodix_ts_read_input_report() when processing device-reported touch contact data. A remote attacker can tamper with the I2C bus or use a malicious controller to write beyond an on-stack buffer and cause memory corruption.

The issue occurs because the maximum contact count taken from a 4-bit device configuration field can exceed the number of contacts the buffer is sized to hold.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-gcp-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)

How to mitigate CVE-2026-64274

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux (Ubuntu package) - addressed in versions 7.0.0-31.31, 7.0.0-31.31.1, 7.0.0-31.31~24.04.1, 7.0.0-1006.7, 7.0.0-1011.11~24.04.1, 7.0.0-1012.12, 7.0.0-1012.12~24.04.1
linux-gcp-7.0 (Ubuntu package) - update to 7.0.0-1011.11~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1013.13

External References

Related Security Bulletins