NULL pointer dereference in Linux kernel - CVE-2026-64427
Published: July 27, 2026
Vulnerability identifier: #VU139534
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-2026-64427
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in the logi_dj_probe function in the hid-logitech-dj driver when probing a crafted Logitech DJ short output report descriptor. A local user can emulate a crafted device descriptor to cause a denial of service.
This issue is reproducible through uhid by emulating a Logitech receiver with a padding-only DJ short output report.
Affected software
Linux kernel
How to mitigate CVE-2026-64427
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3