Out-of-bounds write in Linux kernel - CVE-2026-90000
Published: September 16, 2026
Vulnerability identifier: #VU150288
CSH Severity: High
CVSS v4: 8.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90000
CWE-ID: CWE-787
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information, corrupt memory, or cause a denial of service.
The vulnerability exists due to out-of-bounds read and write operations in the hid-rmi driver when handling undersized RMI reports. A remote attacker can send specially crafted RMI reports to disclose sensitive information, corrupt memory, or cause a denial of service.
A zero-length reply can cause the read loop to run indefinitely with page_mutex held.
Affected software
Linux kernel
How to mitigate CVE-2026-90000
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/056ef8e6700b8b6ca11453a9d4bfb1b868a5cd88
- https://git.kernel.org/stable/c/183da103022ec11af55ba9951d2cc171fb6c836b
- https://git.kernel.org/stable/c/48934c2927414a37a7fadeb6091113177c0b2038
- https://git.kernel.org/stable/c/4956993bb3befdf791d71a4952d8d13bcfd44c7b
- https://git.kernel.org/stable/c/a8be8bbf0952bb7ff46636ead1896769c381fe55
- https://git.kernel.org/stable/c/ab2958e0c94edd63315dd14dc548874cc63a4043
- https://git.kernel.org/stable/c/f4cb9c4556dcb593e66dbb855179dbd351dbb053
- https://git.kernel.org/stable/c/fba600d824597b2a894ecae72fc422c2b8c08f8c