Memory leak in Linux kernel - CVE-2026-89627
Published: September 12, 2026
Vulnerability identifier: #VU149173
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89627
CWE-ID: CWE-401
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 improper memory release in the ROCcat HID device destruction paths when destroying a device with buffered reports stored in its circular buffer. A local user can trigger the affected device destruction path while buffered reports remain stored to cause a denial of service.
Up to ROCCAT_CBUF_SIZE report buffers per device can become unreachable.
Affected software
Linux kernel
How to mitigate CVE-2026-89627
Install security update from vendor's repository.